congius

con·gi·us  (knj-s)

n. pl. con·gi·i (-j-)

1. Abbr. c. or cong. Pharmacology A gallon.

2. An ancient Roman measure for liquids, equal to about seven eighths of a U.S. gallon (3.3 liters).

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[Middle English, a liquid measure, from Latin, from Greek konkhion, diminutive of konkh, konkhos, shellful.]

Thesaurus

Noun

1.

congius - a British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters Imperial gallon, gallon British capacity unit, Imperial capacity unit - a unit of measure for capacity officially adopted in the British Imperial System; British units are both dry and wet bbl, barrel - any of various units of capacity; "a barrel of beer is 31 gallons and a barrel of oil is 42 gallons" quart - a British imperial capacity measure (liquid or dry) equal to 2 pints or 1.136 liters bushel - a British imperial capacity measure (liquid or dry) equal to 4 pecks firkin - a British unit of capacity equal to 9 imperial gallons