Words in english starting with F

• film projector — Noun – English ～ projects successive frames from a reel of film to create moving pictures
• four-pronged — Adjective – English ～ having four prongs
• foundry proof — Noun – English ～ a proof taken from a form before duplicate plates are made
• factor of proportionality — Noun – English ～ the constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality
• family Proteaceae — Noun – English ～ large family of Australian and South African shrubs and trees with leathery leaves and clustered mostly tetramerous flowers; constitutes the order Proteales
• family Proteidae — Noun – English ～ mud puppies
• flagellate protozoan — Noun – English ～ a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals
• flagellated protozoan — Noun – English ～ a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals
• family Prunellidae — Noun – English ～ hedge sparrow
• family Pseudococcidae — Noun – English ～ scalelike insects: mealybugs
• family Pseudomonodaceae — Noun – English ～ rod-shaped Gram-negative bacteria; include important plant and animal pathogens
• family Psilophytaceae — Noun – English ～ Paleozoic plants
• family Psilotaceae — Noun – English ～ small family of lower ferns having nearly naked stems and minute scalelike leaves
• family Psittacidae — Noun – English ～ coextensive with the order Psittaciformes
• family Psocidae — Noun – English ～ a family of small soft-bodied insects that feed on decaying vegetation; related to booklice
• family Psophiidae — Noun – English ～ trumpeters
• family Psychodidae — Noun – English ～ very small two-winged flies with hairy wings that develop in moss and damp vegetable matter: sand flies
• Freudian psychology — Noun – English ～ the psychological theories of Sigmund Freud
• family Psyllidae — Noun – English ～ jumping plant lice
• family Pteridaceae — Noun – English ～ one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided

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