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[kon-jee-uh s] /ˈkɒn dʒi əs/
noun, plural congii
[kon-jee-ahy] /ˈkɒn dʒiˌaɪ/ (Show IPA)
(in prescriptions) a gallon (3.7853 liters).
an ancient Roman unit of liquid measure equal to about 0.8 U.S. gallon (3.2 liters).
Origin of congius
1350-1400; Middle English < Latin, alteration of Greek konchíon, equivalent to kónch(ē) conch + -ion diminutive suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for congius
Historical Examples
  • This is furnished with brazen buckets, each holding about a congius.

    De Re Metallica Georgius Agricola
  • Perhaps "metreta" and "congius" should be swapped in this sentence, but it was left as is.

    De Re Metallica Georgius Agricola
  • One metreta, a Greek measure, equalled about nine English gallons, and a congius contained about six pints.

    De Re Metallica Georgius Agricola
  • congius Ripensis tells us, that the same restriction was imposed by the Lacedæmonians on their Helots and all domestic animals.

    Curiosities of Medical Experience

    J. G. (John Gideon) Millingen
British Dictionary definitions for congius


noun (pl) -gii (-dʒɪˌaɪ)
(pharmacol) a unit of liquid measure equal to 1 Imperial gallon
an ancient Roman unit of liquid measure equal to about 0.7 Imperial gallon or 0.84 US gallon
Word Origin
C14: from Latin, probably from Greek konkhos liquid measure, conch
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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