pustule
pus·tule / ˈpəschoōl; ˈpəst(y)oōl/ • n. Med. a small blister or pimple on the skin containing pus. ∎ Biol. a small raised spot or rounded swelling, esp. one on a plant resulting from fungal infection.DERIVATIVES: pus·tu·lar / ˈpəschələr; ˈpəstyə-/ adj.
pustule
pustule XIV. — (O)F. pustule or L. pustula blister, f. imit. base *pu- *phu- blow, inflate; see -ULE.
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