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[uhp-er-mohst or, esp. British, -muh st] /ˈʌp ərˌmoʊst or, esp. British, -məst/
adjective, Also, upmost
highest in place, order, rank, power, etc.:
the uppermost peaks of the mountain; the uppermost class of society.
topmost; predominant:
a subject of uppermost concern.
in or into the uppermost place, rank, or predominance:
The blossoms grow uppermost on the stems of these flowers; the thoughts that came uppermost to her mind.
Origin of uppermost
1475-85; upper1 + -most
Can be confused
upmost, uppermost, utmost. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for uppermost
  • Cuplike crowns above the canopy collect rainwater to keep the uppermost limbs hydrated.
  • Granulation, or bubbling, of the stellar surface can reveal how heat is being transported through the uppermost layers of gas.
  • The active layer of permafrost, the uppermost ground layer, thaws in the summer and freezes in the winter.
  • When meat is about half done, turn it over and dredge with flour, that skin side may be uppermost for final browning.
  • Methane in the uppermost atmosphere absorbs light, making the planet appear blue.
  • Likewise, the uppermost points mark sunrise and sunset on the summer solstice.
  • The highest or uppermost point, part, or surface of something.
  • In addition, one of the units houses residential space on its uppermost floors, which is devoted to rental apartments.
  • Water conservation is probably not uppermost in your mind as you empty your bladder.
  • Global warming, a long-range phenomenon, may not be uppermost in people's minds during an economic downturn.
British Dictionary definitions for uppermost


highest in position, power, importance, etc
in or into the highest position, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for uppermost

late 15c., from upper + -most.

Online Etymology Dictionary, © 2010 Douglas Harper
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