om

noun1

1. •
   A sacred, mystical syllable used in prayer and meditation.

   • In fact it sounded exactly like the voice of Livia, her vanished sister, and, like her, it was intoning the Aum just as she used once to do at the beginning of her yoga sessions. — 1982

verb1

1. •
   To chant the sacred syllable om.

   • Allen Ginsberg omming like a death rattle, his voice ravaged by the days of Hindu chants and gas. — 1996

noun5

1. •
   Initialism of otitis media.
2. •
   Initialism of operations manager.
3. •
   Initialism of old man (term of address for a male).

   • Games for the harmonics, (children), YL's and XYL's and the OM's, plus free soda for all. — 1967
4. •
   Initialism of outer marker.
5. •
   Initialism of old measurement.