A colorless or pale yellow liquid organic compound with a strong unpleasant odor, used as a solvent and chemical reagent

An organic compound occurring as a colorless liquid with a strong smell, used in medicine and chemical synthesis; loanword from English.

pyrazole; a heterocyclic compound consisting of a five-membered ring of three carbon atoms and two adjacent nitrogen atoms

(pharmacology) piracetam (C6H10N2O2), a drug used to improve memory and brain function

Perak, a state of Malaysia

(literary) describes the sound of birds chirping; an onomatopoeia for birdsong

(loanword) pyran, a chemical compound with a six-membered ring containing oxygen

(loanword) pyrazine; a specific type of organic chemical compound containing a nitrogen-rich ring structure

(loanword) piracetam, a drug used to improve memory and cognitive function