from The Century Dictionary and Cyclopedia

  • Living on the surface of the sea only at night, and sinking to the depths of the sea during the day. Pyrosoma, most pteropods and heteropods, and many crustaceans, medusæ, and siphonophores, are examples of nyctipelagic organisms.


Sorry, no etymologies found.


Sorry, no example sentences found.

Wordnik is becoming a not-for-profit! Read our announcement here.


Log in or sign up to get involved in the conversation. It's quick and easy.