HDM

H4D2M3

A form of hot dark matter — Dark matter traveling at ultrarelativistic speeds.

UncommonScrabble 9
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Meanings

nounHDM (uncountable)
  1. abbreviationinitialismuncountableastronomyInitialism of hot dark matter.
  2. abbreviationinitialismuncountableInitialism of house dust mite.

Synonyms & antonyms

Also see
dust mite
Cite this entry
APA

HDM. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/HDM

MLA

“HDM.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/HDM. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “HDM,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/HDM.

Source: HDM on Wiktionary, CC BY-SA 4.0.