ah

UK: /ɑː/ US: /ɑ/ ,(ä)

WordReference Random House Learner's Dictionary of American English © 2026

ah /ɑ/   interj. 

1. (used to express pain, surprise, pity, pleasure, and other emotions).
2. (used to express hesitation in stating something):
   I'm buying this for, ah, my colleague.

WordReference Random House Unabridged Dictionary of American English © 2026

ah  (ä), interj. 

1. (used as an exclamation of pain, surprise, pity, complaint, dislike, joy, etc., according to the manner of utterance.)

Ah, 

1. Electricity ampere-hour.

Also, a.h. 
A.H., 

1. in the year of the Hegira;
   since the Hegira (a.d. 622).

• Neo-Latin annō Hejirae

Collins Concise English Dictionary © HarperCollins Publishers::

ah / ɑː/ interjection

1. an exclamation expressing pleasure, pain, sympathy, etc, according to the intonation of the speaker

Collins Concise English Dictionary © HarperCollins Publishers::

AH abbreviation (indicating years in the Muslim system of dating, numbered from the Hegira (622 AD))

1. anno Hegirae

Etymology: Latin