There are 2 definitions of pah in English:

pah1

Line breaks: pah
Pronunciation: /pɑː
 
/

exclamation

Used to express disgust or contempt: ‘Pah! They know nothing.’
More example sentences
  • Crazy what people will do to advertise their site, pah!
  • They couldn't sing or dance that well, they weren't too pretty, and above all they were a manufactured band - pah!
  • And we diligently ensure that harmless old Biggs remains locked up… justice pah!

Origin

natural utterance: first recorded in English in the late 16th century.

Definition of pah in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal

There are 2 definitions of pah in English:

PAH2

Syllabification: PAH

Entry from US English dictionary

abbreviation

Polycyclic aromatic hydrocarbon, any of a group of chemicals formed during the incomplete burning of organic substances.

Definition of pah in: