The early Romans had two words for the twilight. Crepusculum was favored by Roman writers for the half-light of evening, just after the sun sets; diluculum was reserved for morning twilight, just before the sun rises—it is related to lucidus, meaning "bright." We didn't embrace either of these Latin nouns as substitutes for our word twilight, but we did form the adjective crepuscular in the 17th century. The word's zoological sense, relating to animals that are most active at twilight, developed in the 19th century.
Example Sentences
Recent Examples on the WebThe urban crepuscular mammals often graze on the fairways of the Wilson and Harding golf courses (try sunrise or sunset), and doing a hike across the street starting at the Old Zoo Picnic Area seems appropriate for a wildlife walk. Matt Pawlik, Los Angeles Times, 31 Aug. 2022 Many animals became crepuscular to avoid predators. Jacob Livesay, USA TODAY, 26 July 2022 For instance, ungulates, such as bison, and coyotes are generally crepuscular, or most active at dusk and dawn, whereas alligators are diurnal and nocturnal. Andrea Sachs, Washington Post, 22 June 2022 His color palettes, which can range from brilliant orange and blue to crepuscular pinks and purples, seem to evoke land, sky and light in its myriad reflective and refractive states.Los Angeles Times, 12 May 2022 Yuta Tsukinaga’s grainy, tactile 16mm lensing, meanwhile, often casts proceedings in a soft, crepuscular light that brings an appropriate sense of melancholy to proceedings without undue romanticism. Guy Lodge, Variety, 24 Feb. 2022 The presence of god rays (or crepuscular rays, to use a more technical and less religious term) in virtual reality is an artifact from the use of Fresnel lenses in most headsets. Kyle Orland, Ars Technica, 8 Feb. 2022 Additionally, crepuscular rays are most often only seen around sunrise or sunset. Joshua Hawkins, BGR, 26 Jan. 2022 Into the crepuscular realm of social media, for example. Will Self, Harper's Magazine, 23 Nov. 2021 See More
Word History
Etymology
borrowed from New Latin crepusculāris, from Latin crepusculum "twilight" + -āris-ar — more at crepuscule