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.
adj
Uniting the rays of light into one focus.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
Topics: engineering, natural-sciences, optics, physical-sciences, physics
Synonyms: amasthenic
Antonyms: none provided
History
No etymology was provided for this word.
