1. om - Noun
2. om - Verb
3. om - Interjection
4. Om - Proper noun
om (plural oms)
(Hinduism, Buddhism) A sacred, mystical syllable used in prayer and meditation.
om (third-person singular simple present oms, present participle omming, simple past and past participle ommed)
(intransitive) To chant the sacred syllable om.
om
(colloquial) Clipping of nom.
(politics) Initialism of Occupy movement.
(Commonwealth, UK) Initialism of Order of Merit. (a dynastic order of the Royal House of Windsor)
(aviation) Initialism of outer marker.
(medicine) Initialism of otitis media.
Initialism of old measurement.
(CB radio slang) Initialism of old man (term of address for a male).
Synonym: OB
Initialism of operations manager.
Source: en.wiktionary.org