pec
 oxford
 views  updated May 29 2018pec  / pek/ •
n. (usu. pecs)  inf.  a pectoral muscle (esp. with reference to the development of these muscles in bodybuilding).
 The Oxford Pocket Dictionary of Current English 
   PEC
 oxford
 views  updated May 11 2018PEC (or p.e.c.) photoelectric cell• photoelectrochemical cell
• Protestant 
Episcopal Church  The Oxford Dictionary of Abbreviations FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH