Nocturnal (adjective, noun)
1. of or pertaining to the night (opposed to diurnal).
2. done, occurring, or coming at night: nocturnal visit.
3. active at night (opposed to diurnal): nocturnal animals.
4. opening by night and closing by day, as certain flowers (opposed to diurnal).
5. Archaic. an astrolabe for telling time at night or for determining latitude by the position of certain stars in reference to Polaris.
OTHER WORDS FROM NOCTURNAL
WORDS THAT MAY BE CONFUSED WITH NOCTURNAL
WORDS RELATED TO NOCTURNAL
nightly, nighttime, late, night
See synonyms for: nocturnal / nocturnally on Thesaurus.com
Origin: 1475–85; < Late Latin nocturnalis. See nocturn, -al
EXAMPLE SENTENCES FROM THE WEB FOR NOCTURNAL
The size of a house cat, colugos are nocturnal mammals that live in trees.
ON A COOL NIGHT IN MALAYSIA, SCIENTISTS TRACK MYSTERIOUS COLUGOS ACROSS THE TREETOPS|YAO-HUA LAW|NOVEMBER 20, 2020|SCIENCE NEWS
Depending on where canopy bridges are located, marsupials or rodents could benefit, though observing such creatures to know for sure could be a challenge if they are nocturnal.
A ROPE BRIDGE RESTORED A HIGHWAY THROUGH THE TREES FOR ENDANGERED GIBBONS|CAROLYN WILKE|OCTOBER 19, 2020|SCIENCE NEWS
Revealing these differences can be a stepping stone toward seeing how nocturnal activities are faring under climate change.
NIGHTS ARE WARMING FASTER THAN DAYS. HERE’S WHAT THAT MEANS FOR THE PLANET.|ULA CHROBAK|OCTOBER 9, 2020|POPULAR SCIENCE
This research project uses the nocturnal insects as a delivery service for tiny electronic packages that weigh less than a hundredth of an ounce.
THESE TINY SENSORS CAN HITCH A RIDE ON MOTHBACK|DEVIN COLDEWEY|OCTOBER 8, 2020|TECHCRUNCH