Definition of cloaca
plural cloacaeplay \-ˌkē, -ˌsē\
Medical Definition of cloaca
plural cloacae \-ˌkē, -ˌsē\play
1a: the common chamber into which the intestinal, urinary, and generative canals discharge especially in monotreme mammals, birds, reptiles, amphibians, and elasmobranch fishesb: the terminal part of the embryonic hindgut of a mammal before it divides into rectum, bladder, and genital precursors
2: a passage in a bone leading to a cavity containing a sequestrum
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