colliform

Alternative form of coliform (“of or pertaining to the bacteria that inhabit the intestines or colons of mammals”).

In the summer of 1992, eight beaches were closed and swimmers were warned away because of colliform bacteria, caused by boaters emptying toilets directly into the lake or onto nearby shores. Park officials may soon supply the lake with floating waste disposal systems.

Alternative form of colloform (“having a rounded, finely banded texture formed by rhythmic precipitation”).

The ore may be massive or colliform and stratified.