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Medical Term:


Pronunciation: nut'gahl


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

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