2. Initialism. University of Miami ¹
3. Initialism. University of Michigan ¹
4. Preposition. (alternative form of umbe) ¹
5. Interjection. Expression of confusion or space filler in conversation. See uh. ¹
6. Verb. (intransitive) To make the ''um'' sound to express confusion or hesitancy. ¹
7. Noun. (alternative spelling of µm) ¹
¹ Source: wiktionary.com
Definition of UM
1. used to indicate hesitation [interj]
Medical Definition of UM
1. Symbol for micromolar. Symbol for micrometer. (05 Mar 2000)
Lexicographical Neighbors of UM
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