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What does -um mean?

Looking for the meaning or definition of the word -um? Here's what it means.

Suffix
  1. Denotes singular grammatical number.
  2. (chemistry) Forms the ends of the names of certain elements (such as molybdenum and platinum).
Suffix
  1. Denotes transitive verbs in the trade pidgins used between English-speakers and indigenous populations; used derogatorily by extension in English by addition to any verb, transitive or not.
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