trihydrogenadj.

Etymology: tri- comb. form 3b.Previous versions of the OED give the stress as: triˈhydrogen.

Chemistry.

Containing 3 atoms of hydrogen in combination, as trihydrogen phosphate, H₃PO₂.

ΘΚΠ

the world > matter > chemistry > elements and compounds > hydrogen > [adjective] > compounds > containing 3xH

trihydric1866

trihydrogen1869

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xv. 154 The three atoms of hydrogen in trihydrogen phosphate may be replaced by three different metals.

This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2019).

(a) Prefixed to adjectives, or to nouns used attributively, in the names or descriptions of acids, alcohols, compound ethers or esters, oxides, salts, etc.; e.g. trisodic or trisodium, (a salt) containing 3 atoms of sodium; triethylic or triethyl (a compound) containing 3 ethyl groups; triethylene, containing three non-contiguous ethylene radicals in the molecule. So trihydric or trihydrogen, tricalcic or tricalcium, triargentic or tri-silver, tricarbon, trichloric, trimethylic or trimethyl, triplumbic, trithionic, triacetic, etc.

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the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > by constituent molecules

triethylic1866

organochlorine1961

phosphazene1961

ylidic1970

the world > matter > chemistry > organic chemistry > hydrocarbons > [adjective] > hydrocarbon radicals > others

toluylic1857

triethylene1866

tolylic1868

1866 W. Odling Lect. Animal Chem. 108 We meet with still less oxidised tricarbon molecules.

1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 346 A trisodic orthophosphate, sometimes called subphosphate.

1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 452 Triplumbic tetroxide, or Red lead.

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xv. 154 The three atoms of hydrogen in trihydrogen phosphate may be replaced by three different metals.

1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 99 Alcohols are classed as monohydric, dihydric, trihydric..according to the number of hydroxyl-groups which they contain.

1920 Jrnl. Chem. Soc. 117 1090 (heading) Triethylene tri- and tetra-sulphides.

1953 Arch. Internal Med. 92 629 The purpose of this communication is to present our preliminary experience in the treatment of..human leukemias..with triethylene thiophosphoramide (ThioTEPA).

1962 J. H. Burn Drugs, Med. & Man xix. 193 Tri-ethylene melamine..is used in the textile industry... It is now widely used in the treatment of Hodgkin's disease.

单词	trihydrogen
释义	trihydrogenadj. Etymology: tri- comb. form 3b.Previous versions of the OED give the stress as: triˈhydrogen. Chemistry. Containing 3 atoms of hydrogen in combination, as trihydrogen phosphate, H₃PO₂. ΘΚΠ the world > matter > chemistry > elements and compounds > hydrogen > [adjective] > compounds > containing 3xH trihydric1866 trihydrogen1869 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xv. 154 The three atoms of hydrogen in trihydrogen phosphate may be replaced by three different metals. This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2019). > as lemmas trihydrogen (a) Prefixed to adjectives, or to nouns used attributively, in the names or descriptions of acids, alcohols, compound ethers or esters, oxides, salts, etc.; e.g. trisodic or trisodium, (a salt) containing 3 atoms of sodium; triethylic or triethyl (a compound) containing 3 ethyl groups; triethylene, containing three non-contiguous ethylene radicals in the molecule. So trihydric or trihydrogen, tricalcic or tricalcium, triargentic or tri-silver, tricarbon, trichloric, trimethylic or trimethyl, triplumbic, trithionic, triacetic, etc. ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > by constituent molecules triethylic1866 organochlorine1961 phosphazene1961 ylidic1970 the world > matter > chemistry > organic chemistry > hydrocarbons > [adjective] > hydrocarbon radicals > others toluylic1857 triethylene1866 tolylic1868 1866 W. Odling Lect. Animal Chem. 108 We meet with still less oxidised tricarbon molecules. 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 346 A trisodic orthophosphate, sometimes called subphosphate. 1868 H. B. Jones & H. Watts Fownes's Man. Elem. Chem. (ed. 10) 452 Triplumbic tetroxide, or Red lead. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xv. 154 The three atoms of hydrogen in trihydrogen phosphate may be replaced by three different metals. 1888 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) I. 99 Alcohols are classed as monohydric, dihydric, trihydric..according to the number of hydroxyl-groups which they contain. 1920 Jrnl. Chem. Soc. 117 1090 (heading) Triethylene tri- and tetra-sulphides. 1953 Arch. Internal Med. 92 629 The purpose of this communication is to present our preliminary experience in the treatment of..human leukemias..with triethylene thiophosphoramide (ThioTEPA). 1962 J. H. Burn Drugs, Med. & Man xix. 193 Tri-ethylene melamine..is used in the textile industry... It is now widely used in the treatment of Hodgkin's disease. extracted from tri-comb. form < adj.1869 as lemmas
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trihydrogenadj.

> as lemmas