Amebocyte

An amebocyte or amoebocyte (/əˈmiː.bə.saɪt/) is a motile cell (moving like an amoeba) in the bodies of invertebrates including cnidaria, echinoderms, molluscs, tunicates, sponges, and some chelicerates.

Moving by pseudopodia, amebocytes can manifest as blood cells or play a similar biological role.

In older literature, the term amebocyte is sometimes used as a synonym of phagocyte.