Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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No pronunciation record was provided for this word.
noun
For any system of binocular vision, a three-dimensional curve containing all points from which the light will converge into a single image.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
* From Ancient Greek ὅρος (hóros, “boundary”) + ὀπτήρ (optḗr, “observer”).
Across languages
2 source translations are retained for this English entry.
