metallo-comb. form

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

Inflections: Before a vowel metall-, metal-.

Forms: 1600s– metallo-, 1800s– metalo-.

Origin: A borrowing from Latin. Etymons: Latin metallo-, metallum.

Etymology: < post-classical Latin metallo-, combining form (first attested in metallocrystallinus (6th cent.)) of metallum metal n. Compare French métallo- (formations in which are found from at least the first half of the 19th cent.), German metallo- (formations in which are found from at least the second half of the 19th cent.).English formations are found from the second half of the 17th cent. (see e.g. metallognomy n. and metallostatics n. ). Attested in loans < French (as metallochromy n.) from the 19th cent.

Forming nouns denoting and adjectives designating objects, compounds, processes, etc., relating to, involving, or containing metal.

metallocene n.

Brit.

/mᵻˈtalə(ʊ)siːn/

U.S.

/məˈtæləˌsin/

Chemistry any of a group of organometallic compounds that consist of a metal atom bonded between two cyclopentadienyl (or similar aromatic) rings in a sandwich structure, used esp. as catalysts in polymer synthesis; cf. ferrocene n.

ΚΠ

1959 Jrnl. Amer. Chem. Soc. 81 3484/2 Another interesting feature of the relative rates recorded in Table I is the order of effectiveness of metallocene derivatives of Group VIII metals in stabilizing adjacent carbonium ion centers; ferrocene < ruthenocene < osmocene.

1994 M. Bochmann Organometallics II. iv. 53 The presence of ligands other than cyclopentadienyl in a metallocene complex enforces a geometry in which the Cp ligands are no longer co-planar; they adopt a ‘bent sandwich’ structure.

metalloenzyme n.

Brit.

/ˌmɛtələʊˈɛnzʌɪm/

/ˌmɛtl̩əʊˈɛnzʌɪm/

/mᵻˌtaləʊˈɛnzʌɪm/

U.S.

/ˌmɛdl̩oʊˈɛnˌzaɪm/

/məˌtæloʊˈɛnˌzaɪm/

Biochemistry an enzyme that is a metalloprotein.

ΚΠ

1950 New Phytologist 49 372 In all previously recorded results, active respiration has always been associated in plant tissues with metallo-enzymes of one kind or another.

1955 Adv. Protein Chem. 10 321 The metalloenzyme can be isolated from its matrix, retaining all of its metal complement in the ‘natural’ state.

1972 Nature 15 Dec. 417/1 Nitrogenase is a metalloenzyme containing iron and molybdenum both of which are essential for catalytic activity.

1998 New Scientist 14 Mar. 80/2 (advt.) Spectroscopic studies of metalloenzymes of the bacterial nitrogen cycle.

† metalloplastic adj. Obsolete relating to electrical or chemical methods of depositing metals or obtaining metal casts.

ΚΠ

1890 Cent. Dict. Metalloplastic, pertaining to the arts of depositing metals or obtaining metal casts by either electric or chemical methods.

metalloporphyrin n.

Brit.

/ˌmɛtələ(ʊ)ˈpɔːf(ᵻ)rɪn/

/ˌmɛtl̩ə(ʊ)ˈpɔːf(ᵻ)rɪn/

/mᵻˌtalə(ʊ)ˈpɔːf(ᵻ)rɪn/

U.S.

/ˌmɛdl̩oʊˈpɔrfərən/

/məˌtæloʊˈpɔrfərən/

Biochemistry any of a group of compounds consisting of a metal ion chelated by a porphyrin, including biologically important molecules such as chlorophylls, cytochromes, and haems.

ΚΠ

1926 Proc. Royal Soc. B. 100 419 When iron combines with hæmatoporphyrin to give a hæmatin, the spectrum resembles that of a typical metallo-porphyrin only when the pigment is in the form of hæmochromogen.

1933 S. W. Cole Pract. Physiol. Chem. (ed. 9) x. 254 The porphyrins combine with various metals, other than iron, to form a series of metalloporphyrin compounds.

1960 Science 19 Feb. 480/2 Similar metalloporphyrins are the active components of chlorocruorins, chlorophylls, hemoglobins, cytochromes, peroxidases, and catalases.

1992 C. A. Smith & E. J. Wood Biosynthesis ix. 206 The pathway leading to the synthesis of two metalloporphyrins, haem and chlorophyll, are common up to the intermediate, protoporphyrin.

metalloprotease n.

Brit.

/ˌmɛtələ(ʊ)ˈprəʊtɪeɪz/

/ˌmɛtl̩ə(ʊ)ˈprəʊtɪeɪz/

/mᵻˌtalə(ʊ)ˈprəʊtɪeɪz/

U.S.

/ˌmɛdl̩oʊˈproʊdiˌeɪz/

/məˌtæloʊˈproʊdiˌeɪz/

/ˌmɛdl̩oʊˈproʊdiˌeɪs/

/məˌtæloʊˈproʊdiˌeɪs/

= metalloproteinase n.

ΚΠ

1967 Q. Rev. Biol. 42 82/1 The article is divided into sections on the serine proteases, the thiol proteases, the metalloproteases and the acid proteases.

1998 Chem. in Brit. Oct. 47/2 It is not unusual to see conferences dedicated to a particular class of protease, such as matrix metalloproteases.

metalloprotein n.

Brit.

/ˌmɛtələ(ʊ)ˈprəʊtiːn/

/ˌmɛtl̩ə(ʊ)ˈprəʊtiːn/

/mᵻˌtalə(ʊ)ˈprəʊtiːn/

U.S.

/ˌmɛdl̩oʊˈproʊˌtin/

/məˌtæloʊˈproʊˌtin/

Biochemistry a protein that contains a metal atom as an essential part of its structure.

ΚΠ

1936 Amer. Naturalist 70 487 (heading) Pyrrolic compounds and metallo-proteins.

1940 Biochem. Jrnl. 34 1163 The metallo-protein compounds present in the red blood corpuscles.

1964 Ann. Rev. Biochem. 33 331 The term metalloprotein is used to designate those types of metal-protein complexes in which the strength of the binding is so great that a metal atom can be considered an integral part of the structure of the protein.

1991 D. T. Sawyer Oxygen Chem. vi. 150 Nature uses a variety of metalloproteins and flavoproteins to activate (or catalyze) dioxygen for useful chemistry.

metalloproteinase n.

Brit.

/ˌmɛtələ(ʊ)ˈprəʊtᵻneɪz/

/ˌmɛtl̩ə(ʊ)ˈprəʊtᵻneɪz/

/mᵻˌtalə(ʊ)ˈprəʊtᵻneɪz/

/ˌmɛtələ(ʊ)ˈprəʊtᵻneɪs/

/ˌmɛtl̩ə(ʊ)ˈprəʊtᵻneɪs/

/mᵻˌtalə(ʊ)ˈprəʊtᵻneɪs/

U.S.

/ˌmɛdl̩oʊˈproʊd(i)əˌneɪz/

/məˌtæloʊˈproʊd(i)əˌneɪz/

/ˌmɛdl̩oʊˈproʊd(i)əˌneɪs/

/məˌtæloʊˈproʊd(i)əˌneɪs/

Biochemistry any of a group of proteolytic enzymes containing a metal ion that is an essential part of the catalytic mechanism; esp. (more fully matrix metalloproteinase) any of several groups of such enzymes that degrade proteins of the extracellular matrix, such as collagen.

ΚΠ

1965 L. Cunningham in M. Florkin & E. H. Stotz Comprehensive Biochem. XVI. iii. 152 The range of types of metallo-proteinases appears to be very broad, and..little is known of most of them.

1991 New Scientist 8 June 40/1 These enzymes are known as matrix metalloproteinases or MMPs, and between them they can break down all the components of the collagen matrix.

1994 Diabetes Forecast May 54/1 Acott's project seeks to understand what triggers the development of these new blood vessels and the possible inhibiting effect of metalloproteinases on this process.

† metallostatics n. Obsolete the study of the weight of metals and minerals.

ΘΚΠ

the world > the earth > earth sciences > geology > mineralogy > [noun] > branches

metallostatics1665

mining geology1871

metallogeny1905

mineralography1916

mineragraphy1917

minerogenesis1917

petroleum geology1917

metallogenesis1923

society > occupation and work > industry > working with specific materials > working with metal > [noun] > branches of metallurgy

pyrotechny1592

metallostatics1665

siderurgy1869

metallography1871

physical metallurgy1905

pyrometallurgy1909

powder metallurgy1933

1665 Philos. Trans. (Royal Soc.) 1 113 Fifthly, of Metallostaticks, whereby the mixture of Mettals and Minerals may be certainly known.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metallo-
释义	metallo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Inflections: Before a vowel metall-, metal-. Forms: 1600s– metallo-, 1800s– metalo-. Origin: A borrowing from Latin. Etymons: Latin metallo-, metallum. Etymology: < post-classical Latin metallo-, combining form (first attested in metallocrystallinus (6th cent.)) of metallum metal n. Compare French métallo- (formations in which are found from at least the first half of the 19th cent.), German metallo- (formations in which are found from at least the second half of the 19th cent.).English formations are found from the second half of the 17th cent. (see e.g. metallognomy n. and metallostatics n. ). Attested in loans < French (as metallochromy n.) from the 19th cent. Forming nouns denoting and adjectives designating objects, compounds, processes, etc., relating to, involving, or containing metal. metallocene n. Brit. /mᵻˈtalə(ʊ)siːn/ , U.S. /məˈtæləˌsin/ Chemistry any of a group of organometallic compounds that consist of a metal atom bonded between two cyclopentadienyl (or similar aromatic) rings in a sandwich structure, used esp. as catalysts in polymer synthesis; cf. ferrocene n. ΚΠ 1959 Jrnl. Amer. Chem. Soc. 81 3484/2 Another interesting feature of the relative rates recorded in Table I is the order of effectiveness of metallocene derivatives of Group VIII metals in stabilizing adjacent carbonium ion centers; ferrocene < ruthenocene < osmocene. 1994 M. Bochmann Organometallics II. iv. 53 The presence of ligands other than cyclopentadienyl in a metallocene complex enforces a geometry in which the Cp ligands are no longer co-planar; they adopt a ‘bent sandwich’ structure. metalloenzyme n. Brit. /ˌmɛtələʊˈɛnzʌɪm/ , /ˌmɛtl̩əʊˈɛnzʌɪm/ , /mᵻˌtaləʊˈɛnzʌɪm/ , U.S. /ˌmɛdl̩oʊˈɛnˌzaɪm/ , /məˌtæloʊˈɛnˌzaɪm/ Biochemistry an enzyme that is a metalloprotein. ΚΠ 1950 New Phytologist 49 372 In all previously recorded results, active respiration has always been associated in plant tissues with metallo-enzymes of one kind or another. 1955 Adv. Protein Chem. 10 321 The metalloenzyme can be isolated from its matrix, retaining all of its metal complement in the ‘natural’ state. 1972 Nature 15 Dec. 417/1 Nitrogenase is a metalloenzyme containing iron and molybdenum both of which are essential for catalytic activity. 1998 New Scientist 14 Mar. 80/2 (advt.) Spectroscopic studies of metalloenzymes of the bacterial nitrogen cycle. † metalloplastic adj. Obsolete relating to electrical or chemical methods of depositing metals or obtaining metal casts. ΚΠ 1890 Cent. Dict. Metalloplastic, pertaining to the arts of depositing metals or obtaining metal casts by either electric or chemical methods. metalloporphyrin n. Brit. /ˌmɛtələ(ʊ)ˈpɔːf(ᵻ)rɪn/ , /ˌmɛtl̩ə(ʊ)ˈpɔːf(ᵻ)rɪn/ , /mᵻˌtalə(ʊ)ˈpɔːf(ᵻ)rɪn/ , U.S. /ˌmɛdl̩oʊˈpɔrfərən/ , /məˌtæloʊˈpɔrfərən/ Biochemistry any of a group of compounds consisting of a metal ion chelated by a porphyrin, including biologically important molecules such as chlorophylls, cytochromes, and haems. ΚΠ 1926 Proc. Royal Soc. B. 100 419 When iron combines with hæmatoporphyrin to give a hæmatin, the spectrum resembles that of a typical metallo-porphyrin only when the pigment is in the form of hæmochromogen. 1933 S. W. Cole Pract. Physiol. Chem. (ed. 9) x. 254 The porphyrins combine with various metals, other than iron, to form a series of metalloporphyrin compounds. 1960 Science 19 Feb. 480/2 Similar metalloporphyrins are the active components of chlorocruorins, chlorophylls, hemoglobins, cytochromes, peroxidases, and catalases. 1992 C. A. Smith & E. J. Wood Biosynthesis ix. 206 The pathway leading to the synthesis of two metalloporphyrins, haem and chlorophyll, are common up to the intermediate, protoporphyrin. metalloprotease n. Brit. /ˌmɛtələ(ʊ)ˈprəʊtɪeɪz/ , /ˌmɛtl̩ə(ʊ)ˈprəʊtɪeɪz/ , /mᵻˌtalə(ʊ)ˈprəʊtɪeɪz/ , U.S. /ˌmɛdl̩oʊˈproʊdiˌeɪz/ , /məˌtæloʊˈproʊdiˌeɪz/ , /ˌmɛdl̩oʊˈproʊdiˌeɪs/ , /məˌtæloʊˈproʊdiˌeɪs/ = metalloproteinase n. ΚΠ 1967 Q. Rev. Biol. 42 82/1 The article is divided into sections on the serine proteases, the thiol proteases, the metalloproteases and the acid proteases. 1998 Chem. in Brit. Oct. 47/2 It is not unusual to see conferences dedicated to a particular class of protease, such as matrix metalloproteases. metalloprotein n. Brit. /ˌmɛtələ(ʊ)ˈprəʊtiːn/ , /ˌmɛtl̩ə(ʊ)ˈprəʊtiːn/ , /mᵻˌtalə(ʊ)ˈprəʊtiːn/ , U.S. /ˌmɛdl̩oʊˈproʊˌtin/ , /məˌtæloʊˈproʊˌtin/ Biochemistry a protein that contains a metal atom as an essential part of its structure. ΚΠ 1936 Amer. Naturalist 70 487 (heading) Pyrrolic compounds and metallo-proteins. 1940 Biochem. Jrnl. 34 1163 The metallo-protein compounds present in the red blood corpuscles. 1964 Ann. Rev. Biochem. 33 331 The term metalloprotein is used to designate those types of metal-protein complexes in which the strength of the binding is so great that a metal atom can be considered an integral part of the structure of the protein. 1991 D. T. Sawyer Oxygen Chem. vi. 150 Nature uses a variety of metalloproteins and flavoproteins to activate (or catalyze) dioxygen for useful chemistry. metalloproteinase n. Brit. /ˌmɛtələ(ʊ)ˈprəʊtᵻneɪz/ , /ˌmɛtl̩ə(ʊ)ˈprəʊtᵻneɪz/ , /mᵻˌtalə(ʊ)ˈprəʊtᵻneɪz/ , /ˌmɛtələ(ʊ)ˈprəʊtᵻneɪs/ , /ˌmɛtl̩ə(ʊ)ˈprəʊtᵻneɪs/ , /mᵻˌtalə(ʊ)ˈprəʊtᵻneɪs/ , U.S. /ˌmɛdl̩oʊˈproʊd(i)əˌneɪz/ , /məˌtæloʊˈproʊd(i)əˌneɪz/ , /ˌmɛdl̩oʊˈproʊd(i)əˌneɪs/ , /məˌtæloʊˈproʊd(i)əˌneɪs/ Biochemistry any of a group of proteolytic enzymes containing a metal ion that is an essential part of the catalytic mechanism; esp. (more fully matrix metalloproteinase) any of several groups of such enzymes that degrade proteins of the extracellular matrix, such as collagen. ΚΠ 1965 L. Cunningham in M. Florkin & E. H. Stotz Comprehensive Biochem. XVI. iii. 152 The range of types of metallo-proteinases appears to be very broad, and..little is known of most of them. 1991 New Scientist 8 June 40/1 These enzymes are known as matrix metalloproteinases or MMPs, and between them they can break down all the components of the collagen matrix. 1994 Diabetes Forecast May 54/1 Acott's project seeks to understand what triggers the development of these new blood vessels and the possible inhibiting effect of metalloproteinases on this process. † metallostatics n. Obsolete the study of the weight of metals and minerals. ΘΚΠ the world > the earth > earth sciences > geology > mineralogy > [noun] > branches metallostatics1665 mining geology1871 metallogeny1905 mineralography1916 mineragraphy1917 minerogenesis1917 petroleum geology1917 metallogenesis1923 society > occupation and work > industry > working with specific materials > working with metal > [noun] > branches of metallurgy pyrotechny1592 metallostatics1665 siderurgy1869 metallography1871 physical metallurgy1905 pyrometallurgy1909 powder metallurgy1933 1665 Philos. Trans. (Royal Soc.) 1 113 Fifthly, of Metallostaticks, whereby the mixture of Mettals and Minerals may be certainly known. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < comb. form1665
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