Definition of moonless
: lacking the light of the moon
Recent Examples of moonless from the Web
Worms raised in perpetual light or in entirely moonless day-night cycles never displayed reproductive rhythms.
Mattis urged Trump to launch the raid swiftly: the operation, which was aimed at one of the leaders of Al Qaeda in Yemen, required a moonless night, and the window for action was approaching.
And with a moonless night on August 31, sky conditions should be ideal for meteor viewing.
On a cloudy, moonless night somewhere in northeastern China, three men creep through a stand of Japanese Clethra trees.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'moonless'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of moonless
Learn More about moonless
Seen and Heard
What made you want to look up moonless? Please tell us where you read or heard it (including the quote, if possible).