Help Wordnik hunt for a million missing words by backing our Kickstarter!


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A bone that forms directly in membranous connective tissue, as some cranial bones, instead of developing from cartilage.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any bone that develops within membranous tissue without previous cartilage formation; e.g. the clavicle and bones of the skull


Sorry, no etymologies found.


Sorry, no example sentences found.


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