abbr.Dec. The 12th month of the year in the Gregorian calendar. See table at calendar.
ETYMOLOGY:
Middle English decembre, from Old French, from Latin December, the tenth month of the Roman year, probably from *decemmembris, from *decem-mnsris : decem, ten; see dek in Appendix I + mnsis, month; see menses.
d
-s
m
b
r
nsris : decem, ten; see dek
in Appendix I + m
