from Wiktionary, Creative Commons Attribution/Share-Alike License
- conj. But.
- account; money of account
- air conditioning
- alternating current
- ante cibum, before meals
from the GNU version of the Collaborative International Dictionary of English
- n. an electric current that reverses direction sinusoidally. Alternative to
direct curent, DC.
from The Century Dictionary and Cyclopedia
- n. The early form of oak, preserved (through the shortening of the vowel before two consonants) in certain place-names (whence surnames): as, Acton [⟨ AS. Āctū n], literally, oak-town, or dwelling among the oaks: Acley or Ackley, also Oakley [⟨ AS. Ācleá], literally, oak-lea.
- n. A prefix, assimilated form of ad- before c and q, as in accede, acquire, etc.; also an accommodated form of other prefixes, as in accurse, accloy, accumber, etc. See these words.
- n. An adjective-suffix of Greek or Latin origin, as in cardiac, maniac, iliac, etc. It is always preceded by -i- and, like -ic, may take the additional suffix -al.
- etc. Points of flexure in the heating curves of iron and steel. The point ac1 on heating is the same as ar1 on cooling, etc.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a radioactive element of the actinide series; found in uranium ores
- n. an electric current that reverses direction sinusoidally
From Middle English, ac, oc, from Old English ac, oc ("but, for, because", conjunction), from Proto-Germanic *ak (“but, moveover”). (Wiktionary)