- The definition of hemolymph is a circulating fluid in invertebrates that works as blood or in addition to blood.
A fluid in the hemocoel of an invertebrate that circulates through the invertebrate is an example of hemolymph.
the circulating fluid in open tissue spaces of invertebrates: it may act as blood, as in arthropods, or be in addition to blood, as in earthworms
Origin of hemolymphhemo- + lymph
The circulatory fluid of arthropods and some mollusks, analogous to blood and lymph in vertebrates.