%calcareou%

a. [ L. calcarius pertaining to lime. See Calx. ] Partaking of the nature of calcite or calcium carbonate; consisting of, or containing, calcium carbonate or carbonate of lime. [ 1913 Webster ]

Calcareous spar. Same as Calcite. [ 1913 Webster ]

n. Quality of being calcareous. [ 1913 Webster ]

a. [ 1913 Webster ]

1. (Zool.) Formed of a mixture of horny and calcareous materials, as some shells and corals. [ 1913 Webster ]

2. Horny on one side and calcareous on the other. [ 1913 Webster ]

a. (Geol.) Partaking of the nature of, or consisting of, mica and lime; -- applied to a mica schist containing carbonate of lime. [ 1913 Webster ]

a. Half or partially calcareous; as, a semicalcareous plant. [ 1913 Webster ]