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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
adj
Acting as a medium for sight; making use of refraction (of lenses, etc.).
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Pertaining to a diopter.
Definition source: English Wiktionary via Wiktextract
Usage: obsolete
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Capable of being seen through.
Definition source: English Wiktionary via Wiktextract
Usage: obsolete
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The branch of optics concerned with refraction.
Definition source: English Wiktionary via Wiktextract
Usage: in-plural
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
A dioptric telescope.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From Greek διοπτρικός. Compare diopter.
