dem

Short definition from Wiktionary

Pronoun

1. 1
   Nonstandard form of them.

Determiner

1. 1
   Nonstandard form of them, in the sense of "those".
2. 2
   (clitic, suffix) A group of.

Noun

1. 1
   Initialism of digital elevation model.
2. 2
   Initialism of diethyl malonate.
3. 3
   Initialism of digital experience monitoring.
4. 4
   Clipping of Democrat.

Proper noun

1. 1
   Abbreviation of Democratic Party.