ferri-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Origin: A borrowing from Latin. Etymon: Latin ferri-.

Etymology: < classical Latin ferri-, combining form (in e.g. ferricrepinus ringing with iron, clanging) of ferrum iron (see ferro- comb. form). In use in chemistry (see sense 2) chiefly after French ferri- (formations in which are found from the first half of the 19th cent. in chemical use (apparently earliest in the works of Justus Liebig), and from the 20th cent. or earlier in sense ‘containing iron’ or ‘of or relating to iron’, e.g. ferrimagnétisme ferrimagnetism n.).Attested earliest in the second half of the 17th cent. in ferrific adj., and subsequently from the late 18th cent. Combining with second elements ultimately of Greek and Latin origin. In sense 1, ferri- comb. form is much less common than ferro- comb. form. With sense 2 compare synonymous †ferrid- , attested in a number of formations (exemplified below) from the first half of the 19th cent. (after German †ferrid- (1839 or earlier in J. Liebig; < classical Latin ferri- + a suffix of uncertain origin, perhaps a specific use of German -id -ide suffix)); compare:1840 T. Graham Elements Chem.: Pt. 4th v. 451 Liebig views this salt as containing a salt-radical, Ferricyanogen or ferridcyanogen, Fe₂Cy₆, differing from ferrocyanogen in having twice its atomic weight and being tribasic.1845 G. E. Day tr. J. F. Simon Animal Chem. I. 16 Ferrocyanide and ferridcyanide of potassium [Ger. Kaliumeisencyanür..Kaliumeisencyanid].1854 J. Scoffern in Orr's Circle Sci. Chem. 443 A..hydracid, ferrosesquicyanic acid, or ferridcyanic acid.1889 E. J. Wall Dict. Photogr. 158 Reduction will proceed in proportion to the amount of ferridcyanide present.

1. Forming nouns and adjectives with the sense ‘relating to or containing iron’, as ferricrete n., ferriferous adj., ferrivorous adj.; = ferro- comb. form 4.

2. Chemistry.

a. Used in the names of compounds, anions, etc., to indicate the presence of iron in the ferric state (oxidation number +3; cf. ferric adj. 1). Contrasted with ferro- comb. form 1a.Recorded earliest in ferricyanide and ferricyanogen.

ΚΠ

1840 T. Graham Elements Chem.: Pt. 4th v. 451 One fourth of the potassium of the ferrocyanide is converted into chloride, from which the resulting ferricyanide may be separated by crystallization.

1840 T. Graham Elements Chem.: Pt. 4th v. 451 Liebig views this salt as containing a salt-radical, Ferricyanogen or ferridcyanogen, Fe₂Cy₆, differing from ferrocyanogen in having twice its atomic weight and being tribasic.

1909 Chem. Abstr. 3 2008 Schmiedeberg prepared ‘ferratin’ and called it a ‘ferrialbuminic acid’ of 6% Fe content.

1925 H. C. Booth tr. F. Auerbach Mod. Magnetics (U.K. ed.) iv. 89 Ferri- and ferro-salts have by no means the same atomic magnetizability.

1990 Jrnl. Developmental Physiol. 14 49/2 Ferro-iron [Fe(II)] is known to be much easier transferred across membranes than ferri-iron.

2006 G. Buzsáki Rhythms of Brain iv. 95 Cytochromes..catalyze the reaction between ferrocytochrome c and oxygen to yield ferricytochrome c and water.

ferricyanhydric acid n.

Brit.

/ˌfɛrɪsʌɪənhʌɪdrɪk ˈasɪd/

U.S.

/ˈˌfɛrɪsaɪənˌhaɪdrɪk ˈæsəd/

[after French acide ferricyanhydrique ( J. Liebig Traité de chimie organique (1840) I. 169), itself after German †Ferridcyanwasserstoffsäure (1839 or earlier in Liebig)] now rare = ferricyanic acid n.

ΚΠ

1843 T. Thomson Chem. Animal Bodies i. ii. 30 The supposed basis of Gmelin's prussiate of potash:..Ferricyanhydric acid, 2Cfy + 3H.

1870 J. M. Crafts Short Course Qualitative Anal. (ed. 2) 73 Ferrous sulphate precipitates compounds of ferri-cyanhydric acid, in acid solution, as Turnbull's Blue.

1902 U.S. Patent 719,623 1/2 I prefer to use..the Prussian blue made..by ferricyanhydric acid or its salts with a ferro salt.

ferricyanic acid n.

Brit.

/ˌfɛrɪsʌɪanɪk ˈasɪd/

U.S.

/ˈˌfɛrɪsaɪˌænɪk ˈæsəd/

[after French acide ferricyanique (1841 or earlier in a letter from T. Graham to J.-B. Dumas, cited in Ann. de chimie et de physique (1842) 4 182)] an unstable acid obtained by acidifying ferricyanides, and crystallizing in brownish-green needles.Formula: H₃Fe(CN)₆.

ΚΠ

1842 T. Graham Elem. Chem. iii. ii. 732 The molecular formulae for ferricyanic acid..and for ferricyanide of potassium.., deducible from the same principles, are: [formulae].

1927 Jrnl. Amer. Chem. Soc. 49 365 Potassium ferricyanide shows no hydrolysis and ferricyanic acid is consequently a strong acid.

2009 Jrnl. Chem. Educ. 86 800 Acids..react with potassium hexacyanoferrate(III) forming ferricyanic acid, which decomposes forming toxic hydrogen cyanide.

ferricyanide n.

Brit.

/ˌfɛrɪˈsʌɪənʌɪd/

U.S.

/ˌfɛrɪˈsaɪəˌnaɪd/

a salt containing an anion Fe(CN)₆³⁻; the anion itself; cf. ferrocyanide n. at ferro- comb. form 1a.See also potassium ferricyanide n. at potassium n. Compounds 2.

ΚΠ

1840¹Ferricyanide [see sense 2a].

1922 T. M. Lowry Inorg. Chem. xxii. 265 Ozone..oxidises sulphides to sulphates, ferrocyanides to ferricyanides, and manganous to manganic compounds.

1953 A. G. E. Pearse Histochem. iv. 75 Tyrosine groups in some proteins could be oxidized by ferricyanide.

1993 Sci. News 16 Jan. 44/2 Chemists keep ferricyanide, in which an iron atom attaches to six cyanide side groups, as far as possible from aluminum.

ferricyanogen n.

Brit.

/ˌfɛrɪsʌɪˈanədʒ(ə)n/

U.S.

/ˌfɛrɪsaɪˈænədʒən/

/ˌfɛrɪsaɪˈænəˌdʒɛn/

[after French ferricyanogène ( J. Liebig Traité de chimie organique (1840) I. 169); compare German †Ferridcyan, in same sense (1839 or earlier)] now rare or disused a radical [Fe(CN)₆]₂, formerly thought to exist in ferricyanides.

ΚΠ

1840²Ferricyanogen [see sense 2a].

1866 H. Draper Text-bk. Chem. lxxxi. 447 Ferricyanogen..is a hypothetical compound radical, which yields some compounds of interest.

1931 U.S. Patent 1,819,818 6/1 The complex radicals are ferro and ferricyanogen.

ferrihydrite n.

Brit.

/ˌfɛrɪˈhʌɪdrʌɪt/

U.S.

/ˌfɛrɪˈhaɪˌdraɪt/

[after Russian ferrigidrit (F. V. Čuxrov et al. 1971, in Izvestija Akademii Nauk SSSR. Serija geologičeskaja Jan. 6)] an iron-containing mineral, typically occurring as rust-brown aggregates of microscopic particles, which occurs widely in wet, iron-rich environments and is also present in the iron-storage protein ferritin.Ferrihydrite is a variably hydrated iron( iii) oxide/hydroxide, for which no single formula is widely accepted.

ΚΠ

1972 F. V. Chukhrov in Internat. Clay Conf. Abstr. Preprints Vol. I. 397 118 An analogous substance was found in natural conditions, and a name ferrihydrite—was proposed for it (Chukhrov et al., 1971), which was confirmed by the Commission on new minerals of the IMA.

1995 A. M. Ure in B. J. Alloway Heavy Metals in Soils (ed. 2) iv. 16 Precipitation of Fe is usually in the form of the gelatinous ferrihydrite (5Fe₂O₃·9H₂O) initially and this gradually dehydrates to more stable forms such as goethite.

2009 K. M. Scott & C. F. Pain Regolith Sci. iv. 59/1 Ferrihydrite is the brown rusty scum visible at springs, where water seeps from cracks in rocks, or as an ‘oil slick’ on some swamp water.

This is a new entry (OED Third Edition, June 2014; most recently modified version published online March 2022).

单词	ferri-
释义	ferri-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Origin: A borrowing from Latin. Etymon: Latin ferri-. Etymology: < classical Latin ferri-, combining form (in e.g. ferricrepinus ringing with iron, clanging) of ferrum iron (see ferro- comb. form). In use in chemistry (see sense 2) chiefly after French ferri- (formations in which are found from the first half of the 19th cent. in chemical use (apparently earliest in the works of Justus Liebig), and from the 20th cent. or earlier in sense ‘containing iron’ or ‘of or relating to iron’, e.g. ferrimagnétisme ferrimagnetism n.).Attested earliest in the second half of the 17th cent. in ferrific adj., and subsequently from the late 18th cent. Combining with second elements ultimately of Greek and Latin origin. In sense 1, ferri- comb. form is much less common than ferro- comb. form. With sense 2 compare synonymous †ferrid- , attested in a number of formations (exemplified below) from the first half of the 19th cent. (after German †ferrid- (1839 or earlier in J. Liebig; < classical Latin ferri- + a suffix of uncertain origin, perhaps a specific use of German -id -ide suffix)); compare:1840 T. Graham Elements Chem.: Pt. 4th v. 451 Liebig views this salt as containing a salt-radical, Ferricyanogen or ferridcyanogen, Fe₂Cy₆, differing from ferrocyanogen in having twice its atomic weight and being tribasic.1845 G. E. Day tr. J. F. Simon Animal Chem. I. 16 Ferrocyanide and ferridcyanide of potassium [Ger. Kaliumeisencyanür..Kaliumeisencyanid].1854 J. Scoffern in Orr's Circle Sci. Chem. 443 A..hydracid, ferrosesquicyanic acid, or ferridcyanic acid.1889 E. J. Wall Dict. Photogr. 158 Reduction will proceed in proportion to the amount of ferridcyanide present. 1. Forming nouns and adjectives with the sense ‘relating to or containing iron’, as ferricrete n., ferriferous adj., ferrivorous adj.; = ferro- comb. form 4. 2. Chemistry. a. Used in the names of compounds, anions, etc., to indicate the presence of iron in the ferric state (oxidation number +3; cf. ferric adj. 1). Contrasted with ferro- comb. form 1a.Recorded earliest in ferricyanide and ferricyanogen. ΚΠ 1840 T. Graham Elements Chem.: Pt. 4th v. 451 One fourth of the potassium of the ferrocyanide is converted into chloride, from which the resulting ferricyanide may be separated by crystallization. 1840 T. Graham Elements Chem.: Pt. 4th v. 451 Liebig views this salt as containing a salt-radical, Ferricyanogen or ferridcyanogen, Fe₂Cy₆, differing from ferrocyanogen in having twice its atomic weight and being tribasic. 1909 Chem. Abstr. 3 2008 Schmiedeberg prepared ‘ferratin’ and called it a ‘ferrialbuminic acid’ of 6% Fe content. 1925 H. C. Booth tr. F. Auerbach Mod. Magnetics (U.K. ed.) iv. 89 Ferri- and ferro-salts have by no means the same atomic magnetizability. 1990 Jrnl. Developmental Physiol. 14 49/2 Ferro-iron [Fe(II)] is known to be much easier transferred across membranes than ferri-iron. 2006 G. Buzsáki Rhythms of Brain iv. 95 Cytochromes..catalyze the reaction between ferrocytochrome c and oxygen to yield ferricytochrome c and water. b. ferricyanhydric acid n. Brit. /ˌfɛrɪsʌɪənhʌɪdrɪk ˈasɪd/ , U.S. /ˈˌfɛrɪsaɪənˌhaɪdrɪk ˈæsəd/ [after French acide ferricyanhydrique ( J. Liebig Traité de chimie organique (1840) I. 169), itself after German †Ferridcyanwasserstoffsäure (1839 or earlier in Liebig)] now rare = ferricyanic acid n. ΚΠ 1843 T. Thomson Chem. Animal Bodies i. ii. 30 The supposed basis of Gmelin's prussiate of potash:..Ferricyanhydric acid, 2Cfy + 3H. 1870 J. M. Crafts Short Course Qualitative Anal. (ed. 2) 73 Ferrous sulphate precipitates compounds of ferri-cyanhydric acid, in acid solution, as Turnbull's Blue. 1902 U.S. Patent 719,623 1/2 I prefer to use..the Prussian blue made..by ferricyanhydric acid or its salts with a ferro salt. ferricyanic acid n. Brit. /ˌfɛrɪsʌɪanɪk ˈasɪd/ , U.S. /ˈˌfɛrɪsaɪˌænɪk ˈæsəd/ [after French acide ferricyanique (1841 or earlier in a letter from T. Graham to J.-B. Dumas, cited in Ann. de chimie et de physique (1842) 4 182)] an unstable acid obtained by acidifying ferricyanides, and crystallizing in brownish-green needles.Formula: H₃Fe(CN)₆. ΚΠ 1842 T. Graham Elem. Chem. iii. ii. 732 The molecular formulae for ferricyanic acid..and for ferricyanide of potassium.., deducible from the same principles, are: [formulae]. 1927 Jrnl. Amer. Chem. Soc. 49 365 Potassium ferricyanide shows no hydrolysis and ferricyanic acid is consequently a strong acid. 2009 Jrnl. Chem. Educ. 86 800 Acids..react with potassium hexacyanoferrate(III) forming ferricyanic acid, which decomposes forming toxic hydrogen cyanide. ferricyanide n. Brit. /ˌfɛrɪˈsʌɪənʌɪd/ , U.S. /ˌfɛrɪˈsaɪəˌnaɪd/ a salt containing an anion Fe(CN)₆³⁻; the anion itself; cf. ferrocyanide n. at ferro- comb. form 1a.See also potassium ferricyanide n. at potassium n. Compounds 2. ΚΠ 1840¹Ferricyanide [see sense 2a]. 1922 T. M. Lowry Inorg. Chem. xxii. 265 Ozone..oxidises sulphides to sulphates, ferrocyanides to ferricyanides, and manganous to manganic compounds. 1953 A. G. E. Pearse Histochem. iv. 75 Tyrosine groups in some proteins could be oxidized by ferricyanide. 1993 Sci. News 16 Jan. 44/2 Chemists keep ferricyanide, in which an iron atom attaches to six cyanide side groups, as far as possible from aluminum. ferricyanogen n. Brit. /ˌfɛrɪsʌɪˈanədʒ(ə)n/ , U.S. /ˌfɛrɪsaɪˈænədʒən/ , /ˌfɛrɪsaɪˈænəˌdʒɛn/ [after French ferricyanogène ( J. Liebig Traité de chimie organique (1840) I. 169); compare German †Ferridcyan, in same sense (1839 or earlier)] now rare or disused a radical [Fe(CN)₆]₂, formerly thought to exist in ferricyanides. ΚΠ 1840²Ferricyanogen [see sense 2a]. 1866 H. Draper Text-bk. Chem. lxxxi. 447 Ferricyanogen..is a hypothetical compound radical, which yields some compounds of interest. 1931 U.S. Patent 1,819,818 6/1 The complex radicals are ferro and ferricyanogen. ferrihydrite n. Brit. /ˌfɛrɪˈhʌɪdrʌɪt/ , U.S. /ˌfɛrɪˈhaɪˌdraɪt/ [after Russian ferrigidrit (F. V. Čuxrov et al. 1971, in Izvestija Akademii Nauk SSSR. Serija geologičeskaja Jan. 6)] an iron-containing mineral, typically occurring as rust-brown aggregates of microscopic particles, which occurs widely in wet, iron-rich environments and is also present in the iron-storage protein ferritin.Ferrihydrite is a variably hydrated iron( iii) oxide/hydroxide, for which no single formula is widely accepted. ΚΠ 1972 F. V. Chukhrov in Internat. Clay Conf. Abstr. Preprints Vol. I. 397 118 An analogous substance was found in natural conditions, and a name ferrihydrite—was proposed for it (Chukhrov et al., 1971), which was confirmed by the Commission on new minerals of the IMA. 1995 A. M. Ure in B. J. Alloway Heavy Metals in Soils (ed. 2) iv. 16 Precipitation of Fe is usually in the form of the gelatinous ferrihydrite (5Fe₂O₃·9H₂O) initially and this gradually dehydrates to more stable forms such as goethite. 2009 K. M. Scott & C. F. Pain Regolith Sci. iv. 59/1 Ferrihydrite is the brown rusty scum visible at springs, where water seeps from cracks in rocks, or as an ‘oil slick’ on some swamp water. This is a new entry (OED Third Edition, June 2014; most recently modified version published online March 2022). < comb. form1840
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