ance

adverb

1. 1.

   (frequency) One and only one time.

   I have only once eaten pizza.

2. 2.

   (temporal location) Formerly; during some period in the past.

   He was once the most handsome man around.

3. 3.

   Multiplied by one: indicating that a number is multiplied by one.

   Once three is three.

4. 4.

   As soon as.

5. 5.

   At a future time.