-tropismcomb. form

Primary stress is usually attracted to either the syllable immediately preceding this combining form or the first syllable of this combining form. Vowels may be reduced accordingly.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek -τροπος , -ism suffix.

Etymology: < ancient Greek -τροπος turning (see -trope comb. form) + -ism suffix. Compare French -tropisme (formations in which are found from the first half of the 19th cent., e.g. héliotropisme heliotropism n.), German -tropismus (formations in which are found from the second half of the 19th cent., e.g. Geotropismus geotropism n.). Compare -tropy comb. form, and also tropism n.Formations are found from the first half of the 19th cent., e.g. hemitropism n. at hemitrope adj. and n. Derivatives, heliotropism n., in early use frequently after French formations in -tropisme or German formations in -tropismus . Many formations have parallels in -tropy comb. form. Chiefly combining with first elements ultimately of Greek origin; for exceptions, compare e.g. galvanotropism n., viscerotropism n. at viscero- comb. form 2.

Categories »

1. Chemistry. Forming nouns denoting types of variation or change in structural or physical properties, as allotropism n., monotropism n., morphotropism n., etc. Usually corresponding to adjectives in -tropic comb. form and nouns in -trope comb. form.Frequently with parallel formations in -tropy comb. form.

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2. Chiefly Botany. Forming nouns denoting forms of directional movement or growth in response to a stimulus, as geotropism n., phototropism n., etc. Usually corresponding to adjectives in -tropic comb. form.

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3. Pathology. Forming nouns denoting the tendency of a pathogen to infect a specific type of tissue, as neurotropism n., viscerotropism n. at viscero- comb. form 2. Usually corresponding to adjectives in -tropic comb. form.

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

单词	-tropism
释义	-tropismcomb. form Primary stress is usually attracted to either the syllable immediately preceding this combining form or the first syllable of this combining form. Vowels may be reduced accordingly. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek -τροπος , -ism suffix. Etymology: < ancient Greek -τροπος turning (see -trope comb. form) + -ism suffix. Compare French -tropisme (formations in which are found from the first half of the 19th cent., e.g. héliotropisme heliotropism n.), German -tropismus (formations in which are found from the second half of the 19th cent., e.g. Geotropismus geotropism n.). Compare -tropy comb. form, and also tropism n.Formations are found from the first half of the 19th cent., e.g. hemitropism n. at hemitrope adj. and n. Derivatives, heliotropism n., in early use frequently after French formations in -tropisme or German formations in -tropismus . Many formations have parallels in -tropy comb. form. Chiefly combining with first elements ultimately of Greek origin; for exceptions, compare e.g. galvanotropism n., viscerotropism n. at viscero- comb. form 2. Categories » 1. Chemistry. Forming nouns denoting types of variation or change in structural or physical properties, as allotropism n., monotropism n., morphotropism n., etc. Usually corresponding to adjectives in -tropic comb. form and nouns in -trope comb. form.Frequently with parallel formations in -tropy comb. form. Categories » 2. Chiefly Botany. Forming nouns denoting forms of directional movement or growth in response to a stimulus, as geotropism n., phototropism n., etc. Usually corresponding to adjectives in -tropic comb. form. Categories » 3. Pathology. Forming nouns denoting the tendency of a pathogen to infect a specific type of tissue, as neurotropism n., viscerotropism n. at viscero- comb. form 2. Usually corresponding to adjectives in -tropic 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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