Definition that contains calcar
- shell the hard largely calcareous covering of a mollusc or a brachiopod
- coral marine colonial polyp characterized by a calcareous skeleton; masses in a variety of shapes often forming reefs
- cuttlefish ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell
- dentine a calcareous material harder and denser than bone that comprises the bulk of a tooth
- dentin a calcareous material harder and denser than bone that comprises the bulk of a tooth
- cuttle ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell
- foram marine microorganism having a calcareous shell with openings where pseudopods protrude
- sainfoin Eurasian perennial herb having pale pink flowers and curved pods; naturalized in Britain and North America grasslands on calcareous soils; important forage crop and source of honey in Britain
- coat-of-mail shell primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates
- stony coral corals having calcareous skeletons aggregations of which form reefs and islands