opto-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g. optogenetic adj.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ὀπτός , -o- connective.

Etymology: < Hellenistic Greek ὀπτός seen, visible, and related words in ὀπτ- (see optic adj.) + -o- connective. Chiefly combined with second elements of ultimately Greek origin. Attested earliest in an isolated formation in the first half of the 18th cent. (see optometer n.), and subsequently from the second half of the 19th cent.; most formations date from the 20th cent. Compare French opto- (formations in which are found from the mid 19th cent., earliest in optomètre : see optometer n.), German opto- (formations in which are found from at least the late 19th cent.: see e.g. optogram n., optography n.).

Forming chiefly scientific words with the sense ‘of sight or vision, optic’.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online January 2018).

单词	opto-
释义	opto-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g. optogenetic adj. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ὀπτός , -o- connective. Etymology: < Hellenistic Greek ὀπτός seen, visible, and related words in ὀπτ- (see optic adj.) + -o- connective. Chiefly combined with second elements of ultimately Greek origin. Attested earliest in an isolated formation in the first half of the 18th cent. (see optometer n.), and subsequently from the second half of the 19th cent.; most formations date from the 20th cent. Compare French opto- (formations in which are found from the mid 19th cent., earliest in optomètre : see optometer n.), German opto- (formations in which are found from at least the late 19th cent.: see e.g. optogram n., optography n.). Forming chiefly scientific words with the sense ‘of sight or vision, optic’. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online January 2018). < comb. form
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