from The Century Dictionary.

  • noun A genus of holochoanitic nautiloid Cephalopoda having an apically swollen endosiphuncle. It occurs in the Trenton limestone.


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word nanno.


  • I'm in the room to take what the Aussies call a nanno nap. TravelStream™ — Recent Entries at 2010

  • A study of coccoliths in the nanno/foram ooze, characteristic of ocean floor deposition at depths of between 2,000 m and 4,000 m, indicates that the crust was formed during the early or middle Miocene.

    MacQuarie Island, Australia 2008

  • By the way, I'm the type who cheats when doing crossword puzzles etc., and look up the answer if I can't figure it out in a nanno second.

    Where Did I Go? 2005

  • "Sometimes you find a 'nanno,' or something the size of your fingernail.

    unknown title 2009


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