c

/si:/ plural C's, c's noun (C)

1 the third letter of the English alphabet

2 the number 100 in the system of roman numerals

c

1 the written abbreviation of centimetre (s)

2 a written abbreviation of circa (=about): born c 1830

3 the written abbreviation of cubic

4 the written abbreviation of copyright when printed inside a small circle

c 1 noun 1

a) the first note in the musical scale 1 (8) of C major 1 (4)

b) the musical key 1 (4) on this note

2 a mark given to a student's work to show that it is of average quality

2 the written abbreviation of celsius: Water boils at 100ºC.