Word.ws English Dictionary

Plural of magnum

regular plural

The plural of magnum is magnums or magna.

Forms of magnum

Singularmagnum /ˈmæɡnəm/
Pluralmagnums
magna /ˈmæɡnə/
Countablecountable

Meaning of magnum

  1. noun A bottle containing 1.5 liters of fluid, double the volume of a standard wine bottle.
  2. noun A powerful firearm cartridge, often derived from a shorter, less powerful cartridge calibre that uses the same bullet.
  3. noun A handgun that fires a cartridge of this calibre; chiefly a revolver, but rarely an autoloader firing an unusually powerful calibre.

Full definition of magnum

Questions about the plural of magnum

What is the plural of magnum?
The plural of magnum is magnums or magna.
Which is correct, magnums or magna?
Both are used. magna is the more common of the two in English writing.
Is magnum countable?
Magnum is a countable noun.

Source and license

Adapted from Wiktionary: magnum (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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