- pteridophyte
- pteridophyte biology
- pteridophytes
- pteridophytes（fossil）
- pteridosperm
- pteridospermopsida
- pterion
- pterocarya stenoptera in Tongjiang County
- pterocephali herba
- pterodactyloids
- pteromalids
- pteromorpha
- pterosaur eggs
- pterothorax
- pteroylglutamic acid
- p terphenyl
- p-terphenyl
- p tert butylcatechol
- p-tert-butylcatechol
- pterygium
- pterygoid bone
- pterygoid lamina
- pteryla
- PTFE
- PTFE gasket