[ haf-moon, hahf- ]
/ ˈhæfˌmun, ˈhɑf- /


an edible fish, Medialuna californiensis, found in southern California, having a slate-gray body.

Origin of halfmoon

First recorded in 1490–1500; half + moon

Definition for halfmoon (2 of 2)

[ haf-moon, hahf- ]
/ ˈhæfˈmun, ˈhɑf- /


the moon when, at either quadrature, half its disk is illuminated.
the phase of the moon at this time.
something having the shape of a half-moon or crescent.

Origin of half-moon

late Middle English word dating back to 1375–1425
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for halfmoon

British Dictionary definitions for halfmoon



the moon at first or last quarter when half its face is illuminated
the time at which a half-moon occurs
  1. something shaped like a half-moon
  2. (as modifier)half-moon spectacles
anatomy a nontechnical name for lunula
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012