Definition of "PAH"

PAH

noun
plural PAHs
1. (biochemistry) Initialism of phenylalanine hydroxylase.
2. (organic chemistry) Initialism of polycyclic aromatic hydrocarbon.
  Quotations
  Researchers analysed samples of nurdles and burnt lumps of plastic from four Sri Lankan beaches for heavy metals and various chemicals, including benzotriazole UV-stabilisers, which are used to prevent discoloration in plastics, bisphenols and polyaromatic hydrocarbons (PAHs).
  2022 February 9, Karen McVeigh, “‘Oil spills of our time’: experts sound alarm about plastic lost in cargo ship disasters”, in The Guardian‎, Guardian Media Group, retrieved 2022-02-11, Seascape: the state of our oceans
3. (pathology) Initialism of pulmonary arterial hypertension.
4. (medicine) Initialism of paradoxical adipose hyperplasia.