c

1. Abbreviation of circa.

   The document was written in the Middle Ages, c. 1250.

noun

The middle tone in either one of the sets of seven white keys on a keyboard or a set of seven strings on a stringed instrument.

1. (stative) To perceive or detect with the eyes, or as if by sight.
2. To form a mental picture of.
3. (social) To meet, to visit.
4. To be the setting or time of.

   1999 saw the release of many great films.

5. (by extension) To ensure that something happens, especially while witnessing it.

   I'll see you hang for this!  I saw that they didn't make any more trouble.

6. To wait upon; attend, escort.

   I saw the old lady safely across the road.

7. To respond to another player's bet with a bet of equal value.

   I'll see your twenty dollars and raise you ten.

8. To determine by trial or experiment; to find out (if or whether).

   I'll come over later and see if I can fix your computer.

9. (used in the imperative) To reference or to study for further details.

   For a complete proof of the Poincaré conjecture, see Appendix C.

10. To examine something closely, or to utilize something, often as a temporary alternative.

    Can I see that lighter for a second? Mine just quit working.

11. To include as one of something's experiences.

    The equipment has not seen usage outside of our projects.