ameboid adjective 1noun 1forms 1 adjective1 •Resembling or characteristic of an amoeba, particularly in having amoeboid movement.Perhaps the most striking property of the leucocytes as a class in their power of making amoeboid movements—a characteristic which has gained for them the sobriquet of “ wandering ” cells. — 1900 noun1 •A single-celled organism that moves or feeds by amoeboid movement. formsameboids