noun
: a mass of capillaries on the inner wall of the air bladder of various teleost fishes thought to control the diffusion and absorption of the gases contained in the air bladder
noun
: a mass of capillaries on the inner wall of the air bladder of various teleost fishes thought to control the diffusion and absorption of the gases contained in the air bladder
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012