/əˈmiː.bə.saɪt/
Noun, pl. amoebocytes
1. A mobile cell (moving like an amoeba) in the body of invertebrates such as echinoderms, mollusks or sponges. They move by pseudopodia. Similarly to some of the white blood cells of vertebrates, in many species amebocytes are found in the blood or body fluid and play a role in the defense of the organism against pathogens. Depending on the species, it may also digest and distribute food, dispose of wastes, form skeletal fibers, fight infections, and change into other cell types. (wikipedia.org)
2. Also known as explosive cells (wikipedia.org).
3. Phagocytic cell found circulating in the body cavity of coelomates (particularly annelids and molluscs) or crawling through the interstitial tissues of sponges. A fairly noncommittal classification. (biology-online.org)
Also, amœbocyte and amebocyte