*1a (1) : the [[fluid]] that [[circulates]] in the [[heart]], arteries, capillaries, and veins of a vertebrate [[animal]] carrying nourishment and oxygen to and bringing away waste products from all parts of the [[body]] (2) : a comparable fluid of an invertebrate | *1a (1) : the [[fluid]] that [[circulates]] in the [[heart]], arteries, capillaries, and veins of a vertebrate [[animal]] carrying nourishment and oxygen to and bringing away waste products from all parts of the [[body]] (2) : a comparable fluid of an invertebrate |