Define vertebrate: any of a subphylum (Vertebrata) of chordates that comprises animals (such as mammals, birds, reptiles, â¦ â vertebrate in a sentence any of a subphylum (Vertebrata) of chordates that comprises animals (such as mammals, birds, reptiles, amphibians, and fishes) typically having aâ¦ See the full definition
Definition of LIGNITE. : a usually brownish black coal intermediate between peat and bituminous coal; especially: one in which the texture of the original wood is distinct âcalled also brown coal.
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (Ca C O 3).The other polymorphs are the minerals aragonite and vaterite.alcite is the primary mineral in metamorphic marble. It also occurs as a vein mineral in deposits from hot springs, and it occurs in caverns as stalactites and stalagmites. Lublinite is a fibrous, efflorescent form of calcite.