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Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
astigmatic is an adjective meaning "of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images". It carries one recorded sense.
of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images
Definitions, synonyms and semantic relations for astigmatic come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.