Definition of nocturnal
1 : of, relating to, or occurring in the night a nocturnal journey nocturnal activities
2 : active at night a nocturnal predator nocturnal insects, such as mosquitoes
nocturnallyplay \-nəl-ē\ adverb
Examples of nocturnal in a Sentence
he bought a new telescope so he could pursue his favorite nocturnal hobby of astronomy
Recent Examples of nocturnal from the Web
The same attention to the details of realism applies to the audio — visitors hear the sounds of frogs, insects and other creatures, and at night, the cries of nocturnal animals.
Rattlesnakes are nocturnal and hunt at night by sensing heat from their prey.
Robert Pattinson stars as a small-time criminal on a nocturnal odyssey to break his brother out of custody in New York guerilla-filmmaking siblings Josh and Benny Safdie's upgrade to the Cannes competition.
A British researcher showed that one of its therapies actually helped patients suffering from the extremely rare blood disorder called paroxysmal nocturnal hemoglobinuria, or PNH, in which a patient’s complement system attacks red blood cells.
The Cuban solenodon, a nocturnal, football-sized mammal that resembles a chunky shrew, has an abundance of peculiar qualities.
In his first English-language movie, Wai, highly regarded in arthouse circles for lush melodramas like In the Mood for Love, captures America the Lonely with a painterly eye, transforming New York subways into a nocturnal tone poem.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nocturnal'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of nocturnal
Middle English, from Anglo-French or Late Latin; Anglo-French nocturnel, from Late Latin nocturnalis, from Latin nocturnus of night, nocturnal, from noct-, nox night
First Known Use: 15th century
NOCTURNAL Defined for English Language Learners
Definition of nocturnal for English Language Learners
: active mainly during the night
: happening at night
NOCTURNAL Defined for Kids
Definition of nocturnal for Students
1 : happening at night a nocturnal journey
2 : active at night nocturnal insects
Medical Definition of nocturnal
1: of, relating to, or occurring at night nocturnal myoclonus
2: characterized by nocturnal activity a nocturnal form of filariasis
Seen and Heard
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