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ullage

[ uhl-ij ]
/ ˈʌl ɪdʒ /
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noun

the amount by which the contents fall short of filling a container, as a cask or bottle.
the quantity of wine, liquor, or the like, remaining in a container that has lost part of its contents by evaporation, leakage, or use.
Rocketry. the volume of a loaded tank of liquid propellant in excess of the volume of the propellant; the space provided for thermal expansion of the propellant and the accumulation of gases evolved from it.

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Origin of ullage

First recorded in 1400–50; late Middle English ulage, oylage, from Anglo-French ulliage, from Old French ouillage, (h)eullage “wine needed to fill a cask,” equivalent to ouill(er), (a)ouill(er) “to fill (a cask)” (derivative of ouil “eye, hole, bunghole,” from Latin oculus ) + -age; see origin at eye, -age

OTHER WORDS FROM ullage

ullaged, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for ullage

ullage
/ (ˈʌlɪdʒ) /

noun

the volume by which a liquid container falls short of being full
  1. the quantity of liquid lost from a container due to leakage or evaporation
  2. (in customs terminology) the amount of liquid remaining in a container after such loss

verb (tr)

to create ullage in
to determine the amount of ullage in
to fill up ullage in

Derived forms of ullage

ullaged, adjective

Word Origin for ullage

C15: from Old French ouillage filling of a cask, from ouiller to fill a cask, from ouil eye, from Latin oculus eye
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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