-valencycomb. form

Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly.

Origin: Either (i) formed within English, by conversion; partly modelled on German lexical items. Or (ii) a borrowing from Latin; partly modelled on German lexical items. Etymons: valency n.; Latin valentia.

Etymology: < either valency n. or its etymon classical Latin valentia, frequently after German formations in -valenz. Compare valency n. 2 and -valence comb. form.Formations are found from the last quarter of the 19th cent., apparently earliest in quantivalency n. at quantivalence n. Derivatives, earliest after German models. Compare earlier isolated borrowings or formations on words in -valent (see -valent comb. form), as equivalency n., prevalency n.

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1. Chiefly Chemistry. Forming nouns denoting types of valency as specified by the first element; esp. denoting the property of an element, radical, etc., of forming a particular type of chemical bond, as covalency n., quadrivalency n., etc. Frequently corresponding to adjectives in -valent comb. form. Cf. -valence comb. form.

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2. Immunology. Forming nouns denoting the property of an antibody or antigen of binding to a specified number of antigens or antibodies, or of a vaccine or antiserum of containing a specified number of types of antigen or antibody, as monovalency n. and multivalency n. Cf. -valence comb. form.

This is a new entry (OED Third Edition, November 2010; most recently modified version published online March 2022).

单词	-valency
释义	-valencycomb. form Primary stress is attracted to the first syllable of this combining form and vowels may be reduced accordingly. Origin: Either (i) formed within English, by conversion; partly modelled on German lexical items. Or (ii) a borrowing from Latin; partly modelled on German lexical items. Etymons: valency n.; Latin valentia. Etymology: < either valency n. or its etymon classical Latin valentia, frequently after German formations in -valenz. Compare valency n. 2 and -valence comb. form.Formations are found from the last quarter of the 19th cent., apparently earliest in quantivalency n. at quantivalence n. Derivatives, earliest after German models. Compare earlier isolated borrowings or formations on words in -valent (see -valent comb. form), as equivalency n., prevalency n. Categories » 1. Chiefly Chemistry. Forming nouns denoting types of valency as specified by the first element; esp. denoting the property of an element, radical, etc., of forming a particular type of chemical bond, as covalency n., quadrivalency n., etc. Frequently corresponding to adjectives in -valent comb. form. Cf. -valence comb. form. Categories » 2. Immunology. Forming nouns denoting the property of an antibody or antigen of binding to a specified number of antigens or antibodies, or of a vaccine or antiserum of containing a specified number of types of antigen or antibody, as monovalency n. and multivalency n. Cf. -valence comb. form. This is a new entry (OED Third Edition, November 2010; most recently modified version published online March 2022). < comb. form
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