Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The condition or habit of being active at night.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

nocturnal +‎ -ity

Examples

  • Evolution of nocturnality in bats: potential competitors and predators during their early history.

    Archive 2006-06-01

  • Now taking on increasingly monstrous qualities, a vampire-likeness of achieved full nocturnality, even the sleeper finds his dreams inhabited.

    Anarchist news dot org - Comments

  • It's not as easy as you might think, what with the nocturnality and so on.

    Kiss and Blog

  • "We are just now understanding the nocturnality of many creatures," says Chad Moore, Night Sky Program manager with the National Park Service.

    YubaNet.com

  • The differences between phyla are particularly difficult to understand, while differences within smaller group sometimes correrelate with territory-size, burrowing vs. surface nesting, diurnality vs. nocturnality, or sedentary vs. migratory life history.

    ScienceBlogs Channel : Life Science

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