C

Letter

C (lower case c)

1. The third letter of the basic modern Latin alphabet.

See also

• (Latin script):  Aa  Bb  Cc  Dd  Ee  Ff  Gg  Hh  Ii  Jj  Kk  Ll  Mm  Nn  Oo  Pp  Qq  Rr  Sſs  Tt  Uu  Vv  Ww  Xx  Yy  Zz
• (Variations of letter C):  Ćć  Ĉĉ  Čč  Ċċ  C̄c̄  Çç  Ḉḉ  Ȼȼ  Ƈƈ  ɕ  ᴄ  Ｃｃ
• (select other variations) Ƈ ₡ ₵ ₢
• Other scripts: Г (ge), ג (gimel)
• For more variations, see Appendix:Variations of "c".
• C on Wikipedia.Wikipedia

Alternative forms

• c, LL, ll

Numeral

C (upper case Roman numeral, lower case c)

1. Roman numeral hundred (100)
2. the hundredth (100th)

Symbol

C

1. (biochemistry) IUPAC 1-letter abbreviation for cysteine
2. (clothing) Bra cup size.
3. (computing, hexadecimal) The digit for 12.

   0x0000000C

4. (chemistry) Chemical symbol for carbon.
5. (finance) Long-term bond credit rating by Moody's Investors Service, indicating that a bond is in default, with little prospect of debt recovery.
6. (finance) Long-term bond credit rating by Fitch Ratings, indicating that a bond is low grade and on the verge of default.
7. (genetics) IUPAC 1-letter abbreviation for any cytosine
8. (linguistics) A wildcard for a consonant
9. (mathematics) differentiable class

   C¹ functions are differentiable once, and C² functions are twice differentiable

10. (mathematics) The constant of integration.

    ${\displaystyle \int \cos x\,dx=\sin x+C}$

11. (metrology) Symbol for coulomb, an SI unit of electric charge.
12. (metrology) Symbol for degrees Celsius.

    Alternative form: °C

    • 2019 December 2, Fiona Harvey, “Climate crisis: what is COP and can it save the world?”, in Katharine Viner, editor, The Guardian‎ (in English), London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 2019-12-02:

      Current commitments made by national governments under the Paris agreement fall far short of what is required – taken together, they would still condemn the world to an estimated temperature rise of more than 3C by the end of the century.

    • 2022 October 27, Paloma Torres, quoting Potentially Petty/Hot Person, “Advice Column: Am I becoming hotter or just pettier? Paloma Torres answers the age-old question constantly on everyone's minds”, in The Eyeopener, volume 56, number 7 (in English), page 3:

      I’ve noticed my attitude just hasn’t been the vibe lately. Yesterday I totally lost it at a restaurant because my pasta was only 18 C, which is two degrees below normal room temperature—like two degrees! How could they?

13. (physics) capacitance
14. (Voice Quality Symbols) creak (vocal fry)