Words in english starting with P

• pteridologist — Noun – English ～ an expert in the study of ferns
• pteridology — Noun – English ～ the branch of botany that studies ferns
• Pteridophyta — Noun – English ～ containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
• pteridophyte — Noun – English ～ plants having vascular tissue and reproducing by spores
• pteridosperm — Noun – English ～ an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
• Pteridospermae — Noun – English ～ used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
• Pteridospermaphyta — Noun – English ～ used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
• Pteridospermopsida — Noun – English ～ extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
• pteriidae — Noun – English ～ pearl oysters
• pterion — Noun – English ～ the craniometric point in the region of the sphenoid fontanelle
• Pteris multifida — Noun – English ～ Asiatic fern introduced in America
• Pteris — Noun – English ～ large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae
• Pteris cretica — Noun – English ～ cultivated in many varieties as houseplants
• Pternohyla — Noun – English ～ burrowing tree frogs
• Pternohyla fodiens — Noun – English ～ terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest
• Pterocarpus indicus — Noun – English ～ tree native to southeastern Asia having reddish wood with a mottled or striped black grain
• Pterocarpus macrocarpus — Noun – English ～ tree of India and Burma yielding a wood resembling mahogany
• Pterocarpus angolensis — Noun – English ～ deciduous South African tree having large odd-pinnate leaves and profuse fragrant orange-yellow flowers; yields a red juice and heavy strong durable wood
• Pterocarpus — Noun – English ～ genus of tropical trees or climbers having usually broadly winged pods
• Pterocarpus marsupium — Noun – English ～ East Indian tree yielding a resin or extract often used medicinally and in e.g. tanning

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