Also found in: Thesaurus, Medical, Encyclopedia.


 (no͞o-măt′ĭk, nyo͞o-) also pneu·mat·i·cal (-ĭ-kəl)
1. Of or relating to air or other gases.
2. Of or relating to pneumatics.
a. Run by or using compressed air: a pneumatic drill.
b. Filled with air, especially compressed air: a pneumatic tire.
4. Zoology Having cavities filled with air, as the bones of certain birds.
5. Of or relating to the pneuma; spiritual.

[French pneumatique, from Latin pneumaticus, from Greek pneumatikos, from pneuma, pneumat-, wind; see pneu- in Indo-European roots.]

pneu·mat′i·cal·ly adv.
pneu′ma·tic′i·ty (no͞o′mə-tĭs′ĭ-tē, nyo͞o′-) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) zoology the condition of being pneumatic
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
During bird development, finger-like projections from these air sacs invade bone to create networks of internal chambers, a condition called pneumaticity.
This vertebra does not share a transversely concave ventral surface or lateral pneumaticity with Diplodocinae (Wilson, 2002; Whitlock, 2011).