HyperDic: lunar_day

English > 1 sense of the expression *lunar day*:
NOUN	time	lunar day	the period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days)

English > *lunar day*: 1 sense > noun 1, time
Meaning	The period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days).
Broader	day	The period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis