Dictionary

All Word
paramecia Noun any member of the genus Paramecium
penicillin-resistant bacteria Noun bacteria that are unaffected by penicillin
pus-forming bacteria Noun bacteria that produce pus
pathogen Noun any disease-producing agent (especially a virus or bacterium or other microorganism)
protoctist Noun any of the unicellular protists
protist Noun free-living or colonial organisms with diverse nutritional and reproductive modes
protistan Noun free-living or colonial organisms with diverse nutritional and reproductive modes
protoctist family Noun any of the families of Protoctista
protoctist genus Noun any genus of Protoctista
protozoon Noun any of diverse minute acellular or unicellular organisms usually nonphotosynthetic
phycobilin Noun water-soluble proteinaceous pigments found in red algae and cyanobacteria
phycoerythrin Noun red pigment in red algae
prokaryote Noun a unicellular organism having cells lacking membrane-bound nuclei
procaryote Noun a unicellular organism having cells lacking membrane-bound nuclei
piroplasm Noun minute parasite of red blood cells of mammals transmitted by a tick and causing diseases of domestic animals
peridinian Noun flagellate with a thick test composed of plates
pond scum Noun free-floating freshwater green algae
polymastigote Noun flagellates with several flagella
pseudopod Noun temporary outgrowth used by some microorganisms as an organ of feeding or locomotion
pseudopodium Noun temporary outgrowth used by some microorganisms as an organ of feeding or locomotion
plantlike flagellate Noun unicellular organisms having many characteristics of typical algae
plasmodium Noun parasitic protozoan of the genus Plasmodium that causes malaria in humans
plasmodium Noun multinucleate sheet of cytoplasm characteristic of some stages of such organisms as slime molds
pipefish Noun fish with long tubular snout and slim body covered with bony plates
poeciliid fish Noun small usually brightly-colored viviparous surface-feeding fishes of fresh or brackish warm waters
platy Noun small stocky Mexican fish
pellicle Noun thin protective membrane in some protozoa
prickleback Noun small (2-4 inches) pugnacious mostly scaleless spiny-backed fishes of northern fresh and littoral waters having elaborate courtship
prickleback Noun small elongate fishes of shallow northern seas
porbeagle Noun voracious pointed-nose shark of northern Atlantic and Pacific
placoderm Noun fish-like vertebrate with bony plates on head and upper body
pine siskin Noun small finch of North American coniferous forests
pine finch Noun small finch of North American coniferous forests
purple finch Noun North American finch having a raspberry-red head and breast and rump
perching bird Noun a bird with feet adapted for perching (as on tree branches)
percher Noun a bird with feet adapted for perching (as on tree branches)
percher Noun a person situated on a perch
protoavis Noun most primitive avian type known
passeriform bird Noun perching birds mostly small and living near the ground with feet having 4 toes arranged to allow for gripping the perch
pipit Noun a songbird that lives mainly on the ground in open country
phoebe Noun small dun-colored North American flycatcher
phoebe bird Noun small dun-colored North American flycatcher
pine grosbeak Noun large grosbeak of coniferous forests of Old and New Worlds
pitta Noun any bird of the genus Pitta
pyrrhuloxia Noun crested grey-and-red bird of southwest United States and Mexico
petchary Noun a kingbird that breeds in the southeastern United States and winters in tropical America
pewee Noun small olive-colored woodland flycatchers of eastern North America
peewee Noun small olive-colored woodland flycatchers of eastern North America
peewee Noun disparaging terms for small people
peewit Noun small olive-colored woodland flycatchers of eastern North America