protozoan

adj of or like a protozoon （似）原生动物的.

protectionism, protectionist, protective, protective custody, protectively, protector, protectorate, protege (fem 阴性作 protegee), protein, protein-rich, protest, Protestant, Protestantism, protestation, protester, protestingly, protocol, proton, protoplasm, prototype, protozoon (also protozoan), protract, protracted, protraction, protractor, protrude, protrusion, protrusive, protuberance, protuberant, proud, proudly, Prov, provable, provably, prove, proven, provenance, provender, proverb,