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Rhizopoda British & World English

A phylum of single-celled animals which includes the amoebas and their relatives, which have extensible pseudopodia

Rhizopoda in acanthamoeba British & World English

An amoeba of a genus which includes a number that can cause opportunistic infections in humans

Rhizopoda in amoeba British & World English

A single-celled animal which catches food and moves about by extending finger-like projections of protoplasm. Amoebas are either free-living in damp environments or parasitic

Rhizopoda in entamoeba British & World English

An amoeba that typically lives harmlessly in the gut, though one kind can cause amoebic dysentery

Rhizopoda in foraminifer British & World English

A single-celled planktonic animal with a perforated chalky shell through which slender protrusions of protoplasm extend. Most kinds are marine, and when they die thick ocean-floor sediments are formed from their shells