Apparently from collo(id) + -form. <span class="searchmatch">colloform</span> (comparative more <span class="searchmatch">colloform</span>, superlative most <span class="searchmatch">colloform</span>) (mineralogy) Having a rounded, finely banded texture...
From meng- + bulat. IPA(key): /məmˈbu.lat/, [məmˈbu.lat̪̚] membulat <span class="searchmatch">colloform</span>...
(comparative more colliform, superlative most colliform) Alternative form of <span class="searchmatch">colloform</span> (“having a rounded, finely banded texture formed by rhythmic precipitation”)...
capriform caprimulgiform cauliform cheliform chiroform cirriform clypeiform <span class="searchmatch">colloform</span> conchiform corticiform coryneform craterform crateriform cribriform cteniform...