Ac

Ac

1. (chemistry) Chemical symbol for actinium.

Ac (plural Acs)

1. (slang, African-American Vernacular) The Acura Legend automobile.
   • 1994, Notorious B.I.G., Unbelievable:

     With the Mac in the Ac door paneling

Ac

1. Initialism of air-conditioning.
2. (meteorology) Initialism of altocumulus cloud.
3. Abbreviation of acetate.
4. Abbreviation of acetyl.

The use of "Ac" to mean acetate or acetyl is a potential source of confusion, because of the question of which if the two is intended, and also because of Ac = actinium.

• ca, CA, C.A., ca., &ca., &ca

Ac

1. (chemistry) abbreviation of aktinium

• “Ac” in Pusat Rujukan Persuratan Melayu | Malay Literary Reference Centre, Kuala Lumpur: Dewan Bahasa dan Pustaka, 2017.

Ac

1. (organic chemistry) abbreviation of acetat

• ca