any of numerous freshwater, marine, or parasitic one-celled protozoa of the order Amoebida, characterized by a granular nucleus surrounded by a jellylike mass of cytoplasm that forms temporary extensions, or pseudopodia, by which the organism moves, engulfs food particles, and forms food vacuoles.
a protozoan of the genus Amoeba, inhabiting bottom vegetation of freshwater ponds and streams: used widely in laboratory studies.
noun (pl) -bae (-biː), -bas
the usual US spelling of amoeba
ameba a·me·ba or amoeba (ə-mē’bə)
n. pl. a·me·bas or a·me·bae (-bē)
A protozoa of the genus Amoeba and of related genera, occurring in soil and water and parasitic in animals.
Another spelling of amoeba.
infection with Entamoeba histolytica or other pathogenic . . amebiasis am·e·bi·a·sis or amoebiasis (ām’ə-bī’ə-sĭs) n. An infection or disease caused by pathogenic amebas, especially Entamoeba histolytica. Also called amebiosis, amebism. amebiasis also amoebiasis (ām’ə-bī’ə-sĭs) An infection or disease caused by amoebas, especially of the species Entamoeba histolytica, characterized by dysentery.
- Amebic abscess
amebic abscess amebic abscess n. An abscess in the liver or other organ, containing amebas and usually following amebic dysentery. Also called tropical abscess.
of, relating to, or resembling an . characterized by or due to the presence of , as certain diseases. amebic a·me·bic or amoebic (ə-mē’bĭk) adj. Relating to, resembling, or caused by amebas.
- Amebic colitis
a type of dysentery caused by the protozoan Entamoeba histolytica, characterized especially by ulceration of the large intestine. amebic colitis n. Inflammation of colon in amebiasis. amebic dysentery n. Severe intestinal infection of humans caused by the ameba Entamoeba histolytica and resulting in diarrhea, cramping, fever, and ulceration of the colon.