LUNAR DAY

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does lunar day mean? 

• LUNAR DAY (noun)
  The noun LUNAR DAY has 1 sense:

1. the period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days)

  Familiarity information: LUNAR DAY used as a noun is very rare.

 Dictionary entry details 

• LUNAR DAY (noun)

Sense 1

Meaning:

The period of time taken for the moon to make one full rotation on its axis (about 27.3 sidereal days)

Classified under:

Nouns denoting time and temporal relations

Hypernyms ("lunar day" is a kind of...):

day (the period of time taken by a particular planet (e.g. Mars) to make a complete rotation on its axis)

 Context examples 

The results contradict some earlier studies, which had suggested that more water was detected at the Moon’s polar latitudes and that the strength of the water signal waxes and wanes according to the lunar day (29.5 Earth days).

(On Second Thought, the Moon's Water May Be Widespread and Immobile, NASA)