Also found in: Thesaurus.


The vault or expanse of the heavens; the sky.

[Middle English, from Old French, from Late Latin firmāmentum, from Latin, support, from firmāre, to strengthen; see firm2.]

fir′ma·ment′al (-mĕn′tl) adj.
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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.firmamental - relating to the firmament or upper regions
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Mentioned in ?
References in periodicals archive ?
By the absolute equalization of this movement--or of such as this--had the cycles of the firmamental orbs themselves, been adjusted.
After a few volleys of this firmamental artillery a large cloud was seen coming down from the direction of Sterling North, and its approach was heralded by a strange noise similar to the distant roar of a stormy sea.
"Theanyspacewhatever" featured ten renowned artists--Angela Bulloch, Maurizio Cattelan, Liam Gillick, Dominique Gonzalez-Foerster, Douglas Gordon, Carsten Holler, Pierre Huyghe, Jorge Pardo, Philippe Parreno, and Rirkrit Tiravanija--all of whom made work specifically for the exhibition and occupied the ramp, the ceiling (Bulloch's Firmamental Night Sky: Oculus.12,2008), the entry foyer (Cattelan's Daddy Daddy, 2008), the building's exterior (Parreno's Marquee, Guggenheim, NY, 2008), and even the air itself (Gonzalez-Foerster's sound piece Promenade, 2007).