5. (noun)cytosine, C a basefound in DNA and RNA and derived from pyrimidine; pairs with guanine
6. (noun)carbon, C, atomic number 6 an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
4. C indicates a cup as a measurement in recipes 2 c flour
Definition of 'c'
Webster Dictionary
1. c c is the third letter of the Englishalphabet. It is from the Latin letter C, which in old Latin represented the sounds of k, and g (in go); its original value being the latter. In Anglo-Saxon words, or Old English before the Norman Conquest, it always has the sound of k. The Latin C was the same letter as the Greek /, /, and came from the Greekalphabet. The Greeks got it from the Ph/nicians. The English name of C is from the Latin name ce, and was derived, probably, through the French. Etymologically C is related to g, h, k, q, s (and other sibilant sounds). Examples of these relations are in L. acutus, E. acute, ague; E. acrid, eager, vinegar; L. cornu, E. horn; E. cat, kitten; E. coy, quiet; L. circare, OF. cerchier, E. search
2. c the keynote of the normal or "natural" scale, which has neither flats nor sharps in its signature; also, the third note of the relative minor scale of the same
3. c c after the clef is the mark of common time, in which each measure is a semibreve (four fourths or crotchets); for alla breve time it is written /
4. c the "C clef," a modification of the letter C, placed on any line of the staff, shows that line to be middle C
5. c as a numeral, C stands for Latin centum or 100, CC for 200, etc