Definition of colliform:
(adj) :
Alternative form of coliform (“of or pertaining to the bacteria that inhabit the intestines or colons of mammals”). [Of or pertaining to the bacteria that inhabit the intestines (especially the colon) of mammals.]
(adj) :
Alternative form of colloform (“having a rounded, finely banded texture formed by rhythmic precipitation”). [(mineralogy) Having a rounded, finely banded texture formed by rhythmic precipitation.]