cEnglishOxford Dictionary of Englishc ▸ abbreviation 1 Cricket (on scorecards) caught by: ME Waugh c Lara b Walsh 19. 2 cent(s): they cost 25c each. 3 [in combination] (in units of measurement) centi-: centistokes (cS). 4 (c.) century or centuries: a watch case, 19th c. 5 (often c.) (preceding a date or amount) circa; approximately: Isabella was born c.1759. 6 (of water) cold: all bedrooms have h & c. 7 colt. ▸ symbol Physics the speed of light in a vacuum: E = mc2.