circumventricular organ
[ sûr′kəm-vĕn-trĭk′yə-lər ]
n.
Any of the structures in or near the base of the brain that differ from normal brain tissue in having capillaries that lack the usual blood-brain barrier and thus are not isolated from certain compounds in the blood.
Words nearby circumventricular organ
circumstellar,
circumterrestrial,
circumvallate,
circumvallate papilla,
circumvent,
circumventricular organ,
circumvolute,
circumvolution,
circumvolve,
circus,
circus maximus