nerves
paralegalparamountpassengerpermanentperfectedplacementplasteredprosperedproducingpreparingpracticedpracticalprovisionproactiveprotectedprocedureprojectedprojectedperfectedpromotionpresenterporcupinepossessiveproclivitypopulatedpartridgepronounceprofanitypreoccupypulverizepreviewedprocuringprocedurepostulatepatricideparalyzedparagraphparachuteprosperedpatchworkprimitiveprobativepageantry
Photosynthesis. Pulmonary artery. Penguin.
There are no 23 letter words in the English language starting with the letter p.
zapp
zoology
nerves
go count all the P words in the most advanced English dictionary there is.
prenatal
plough on?
padpaidpatternedpacedpallidperfumedperfomedPISSEDplaidpleadplatedpinnedpinedpiledplodplacedpodpostedportendpooledprayedproportionedpreparedpreferredpromptedpromotedpremieredpreviewedpastedpriedpretendpressedproceedputrid
· radiation
paralegalparamountpassengerpermanentperfectedplacementplasteredprosperedproducingpreparingpracticedpracticalprovisionproactiveprotectedprocedureprojectedprojectedperfectedpromotionpresenterporcupinepossessiveproclivitypopulatedpartridgepronounceprofanitypreoccupypulverizepreviewedprocuringprocedurepostulatepatricideparalyzedparagraphparachuteprosperedpatchworkprimitiveprobativepageantry
I'm pretty sure it's atmosphere. It's a science word. :p
X- Rays :P
Quartz and quantum theory are science words. They begin with the letter Q.
Photosynthesis. Pulmonary artery. Penguin.