Search Result for "spirilla": 
Wordnet 3.0

NOUN (1)

1. any flagellated aerobic bacteria having a spirally twisted rodlike form;
[syn: spirillum, spirilla]



WordNet (r) 3.0 (2006):

spirilla
    n 1: any flagellated aerobic bacteria having a spirally twisted
         rodlike form [syn: spirillum, spirilla]