Try Our Apps
Dictionary.com

follow Dictionary.com

Word of the Day
Monday, July 09, 2018

Definitions for ullage

  1. the amount by which the contents fall short of filling a container, as a cask or bottle.
  2. the quantity of wine, liquor, or the like, remaining in a container that has lost part of its contents by evaporation, leakage, or use.
  3. 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.

Learn something
new every day


GET OUR


Thank youfor signing up
Get the Word of the Day Email
Citations for ullage
"And what about the ullage?" she said. We both looked at her. ... "The ullage. The part of the bottle that's empty, under the cap." Ethan Canin, A Doubter's Almanac, 2016
... inspectors stroll casually from hatch to hatch, measuring ullage (the air space between the top of the oil and the top of the tank) with a long rule. Richard F. Dempewolff, "A Super-Tanker Feeds Oil-Thirsty America," Popular Mechanics, August 1950
Origin of ullage
late Middle English
1400-1450
If ever there was a Scrabble word, ullage is that word. In Anglo-French the word is spelled ulliage; Old French records many spellings, e.g., ouillage, (h)eullage, œillage; Middle English has ulage, oylage. The French noun ultimately comes from ouil “eye,” also “bunghole,” from Latin oculus “eye.” The very common Romance suffix -age, prolific in English, comes from Late Latin -agium, a suffix for forming nouns, a derivation of Latin -āticum, the neuter of the adjective suffix -āticus. The suffix -āticus is an extension of -ātus, the past participle ending of first conjugation verbs. Ullage entered English in the 15th century.