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Definition of Haemocoel
1. Noun. (biology) A cavity, between the organs of arthropods and mollusks, through which the blood etc. circulates ¹
¹ Source: wiktionary.com
Medical Definition of Haemocoel
1. The cavity in which most of the major organs of the arthropod body are found, it is filled with the fluid haemolymph (the arthropod equivalent of blood), which is pumped by a heart and which circulates among the organs directly without the use of capillaries. (09 Oct 1997)