# PAH

> English word · Noun · frequency rank #38,539

## Definitions
1. Initialism of phenylalanine hydroxylase.
2. Initialism of polycyclic aromatic hydrocarbon.
3. Initialism of pulmonary arterial hypertension.
4. Initialism of paradoxical adipose hyperplasia.

## Easily confused with
- **PM** (https://plainspell.com/en/vs/pah-vs-pm)
- **PC** (https://plainspell.com/en/vs/pah-vs-pc)
- **PP** (https://plainspell.com/en/vs/pah-vs-pp)
- **PR** (https://plainspell.com/en/vs/pah-vs-pr)
- **pt** (https://plainspell.com/en/vs/pah-vs-pt)
- **PS** (https://plainspell.com/en/vs/pah-vs-ps)
- **po** (https://plainspell.com/en/vs/pah-vs-po)
- **pi** (https://plainspell.com/en/vs/pah-vs-pi)
- **PG** (https://plainspell.com/en/vs/pah-vs-pg)
- **PL** (https://plainspell.com/en/vs/pah-vs-pl)
- **PE** (https://plainspell.com/en/vs/pah-vs-pe)
- **PD** (https://plainspell.com/en/vs/pah-vs-pd)
- **PB** (https://plainspell.com/en/vs/pah-vs-pb)
- **PF** (https://plainspell.com/en/vs/pah-vs-pf)
- **PU** (https://plainspell.com/en/vs/pah-vs-pu)
- **PK** (https://plainspell.com/en/vs/pah-vs-pk)
- **PV** (https://plainspell.com/en/vs/pah-vs-pv)
- **PJ** (https://plainspell.com/en/vs/pah-vs-pj)
- **PW** (https://plainspell.com/en/vs/pah-vs-pw)
- **PX** (https://plainspell.com/en/vs/pah-vs-px)

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pah