-trophcomb. form

Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly.

Origin: Of multiple origins. Partly a borrowing from German. Partly a borrowing from Greek. Etymons: German -troph; Greek -τροϕος.

Etymology: < (i) German -troph, suffix forming adjectives (formations in which are found from at least the late 19th cent.), and its etymon (ii) ancient Greek -τροϕος, combining form (in e.g. ὀλιγότροϕος : see oligotrophic adj.) of τροϕός nurse (see trophus n.). Compare -trophic comb. form.Found from the beginning of the 20th cent., in early use chiefly after German models; compare e.g. heterotroph n., autotroph n. New formations within English are found from the first half of the 20th cent., e.g. oligotroph n., prototroph n. Ancient Greek -τροϕος forms adjectives in both the active sense ‘that nourishes’ (e.g. δονακοτρόϕος producing reeds, ἱππότροϕος rearing horses), and the passive sense ‘nourished, reared’ (e.g. νεότροϕος newly reared, ὀρεσίτροϕος mountain-bred).

Chiefly Biology.

Categories »

1. Forming nouns denoting organisms having a type of nutrition specified by the first element, as autotroph n., biotroph n., heterotroph n., saprotroph n., etc. Usually corresponding to adjectives in -trophic comb. form.

Categories »

2. Forming nouns denoting cells producing a hormone acting on a specific tissue or organ, as lactotroph n., mammotroph n., etc. Usually corresponding to adjectives in -trophic comb. form and nouns in -trophin comb. form.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online September 2021).

单词	-troph
释义	-trophcomb. form Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly. Origin: Of multiple origins. Partly a borrowing from German. Partly a borrowing from Greek. Etymons: German -troph; Greek -τροϕος. Etymology: < (i) German -troph, suffix forming adjectives (formations in which are found from at least the late 19th cent.), and its etymon (ii) ancient Greek -τροϕος, combining form (in e.g. ὀλιγότροϕος : see oligotrophic adj.) of τροϕός nurse (see trophus n.). Compare -trophic comb. form.Found from the beginning of the 20th cent., in early use chiefly after German models; compare e.g. heterotroph n., autotroph n. New formations within English are found from the first half of the 20th cent., e.g. oligotroph n., prototroph n. Ancient Greek -τροϕος forms adjectives in both the active sense ‘that nourishes’ (e.g. δονακοτρόϕος producing reeds, ἱππότροϕος rearing horses), and the passive sense ‘nourished, reared’ (e.g. νεότροϕος newly reared, ὀρεσίτροϕος mountain-bred). Chiefly Biology. Categories » 1. Forming nouns denoting organisms having a type of nutrition specified by the first element, as autotroph n., biotroph n., heterotroph n., saprotroph n., etc. Usually corresponding to adjectives in -trophic comb. form. Categories » 2. Forming nouns denoting cells producing a hormone acting on a specific tissue or organ, as lactotroph n., mammotroph n., etc. Usually corresponding to adjectives in -trophic comb. form and nouns in -trophin comb. form. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online September 2021). < comb. form
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