Skip to Content
Medical Term:


Pronunciation: nut'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

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.