Meaning of C in English

C

1. calorie.

2. Optics. candle; candles.

3. (with a year) about: c1775. [ circa, circiter, circum ]

4. Physics , Chem. curie; curies.

5. cycle; cycles.

Symbol.

1. Optics , Physics. the velocity of light in a vacuum: approximately 186,000 miles per second or 299,793 kilometers per second.

2. Acoustics , Physics. the velocity of sound.

(in prescriptions) with.

[ cum ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .