| pseudhaemal | <zoology> Pertaining to the vascular system of annelids. Pseudhaemal fluid, the circulatory fluid, or blood, of annelids, analogous to the blood of vertebrates. It is often red, but is sometimes green or colourless. Pseudhaemal vessels, the blood vessels of annelids. Origin: Pseudo- + haemal. Source: Websters Dictionary (01 Mar 1998) |
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