AC

or A.C.

1. air conditioning.

   Category: Business

2. Also, ac, a.c., alternating current.

   Category: Electricity and Magnetism

3. before Christ.

Origin of AC:

< L ante Christum

Ac

1. acetate.

   Category: Chemistry

2. acetyl.

   Category: Chemistry

Ac^*

1. actinium.

   Category: Chemistry

^* Chem. Symbol..

ac-

1. var. of ad- before c and

   qu: accede; acquire.

   Category: Affix

-ac

1. var. of -ic after Greek noun stems ending in i:

   cardiac; maniac.

Origin of -ac:

< L -acus < Gk -akos

A/C

or a/c

1. account.

   Category: Business

2. account current.

3. air conditioning.

a.c.

1. (in prescriptions) before meals.

   Category: Pharmacology

Origin of a.c.:

< L ante cibum