You searched for: “acaustobioliths”
acaustobiolith (s) (noun), acaustobioliths (pl)
A noncombustible rock that is organic or formed by organic accumulation of minerals: Acaustobioliths include diatomite, radiolarite, phosphorite, and some limestones.
This entry is located in the following units: bio-, bi-, -bia, -bial, -bian, -bion, -biont, -bius, -biosis, -bium, -biotic, -biotical (page 2) caust-, caus-, caut-, cauter-, cau- + (page 1) litho-, lith-, -lith, -lithic, -lite, -liths, -lites (page 1)