noun sig·num \ˈsignəm\

Definition of signum



  1. 1 :  something that marks or identifies or represents :  sign, signature

  2. 2 [Medieval Latin, from Late Latin, ringing of a bell, from Latin, sign] :  a tower bell large enough to serve as a signal

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of signum

Latin — more at sign

First Known Use: 1643

Seen and Heard

What made you want to look up signum? Please tell us where you read or heard it (including the quote, if possible).


capable of being understood in two ways

Get Word of the Day daily email!