ac-

Etymology 1
From (but not part of the etymology of ).

Prefix

 * 1)  oak.

Etymology 2

 * Around 1500 the c was added to some versions of the a- prefix.
 * From, from , from.

Prefix

 * 1) to or with.

Prefix

 * Occurs when is prefixed to a word beginning with the letter c or q (,, , , etc.)
 * Occurs when is prefixed to a word beginning with the letter c or q (,, , , etc.)