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Pronunciation: nŭt′gahl
Definition: An excrescence on Quercus infectoria (family Fagaceae) and sometimes other species of Quercus (oak), caused by the deposit of the ova of a fly, Cynips gallae tinctorae; an astringent and styptic because of the tannin it contains.
Synonym(s): gall3, galla, oak apple
Examples: glitazone, GI cocktail, etc.
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