Meanings
adjectivemassless (not comparable)
- not comparableHaving no mass.
The photon is a massless particle.
1 more example
On the other hand, Pauli had just proposed a massless, chargeless, colorless, flavorless particle whose sole reason for existence was to preserve the principle of momentum conservation.
2014, Mark A. Cunningham, Neoclassical Physics, page 241
Synonyms & antonyms
Opposite
Origin
- Englishmass
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- Englishmassless
Translations
Chinese Mandarin 無質量 /无质量
- 無質量 /无质量 (wúzhìliàng, wúzhíliàng, wúzhǐliàng)having no mass
Finnish massaton
- massatonhaving no mass
German masselos
- masseloshaving no mass
Russian безма́ссовый
- безма́ссовый (bezmássovyj)having no mass
Rhymes & wordplay
Rhymes with massless
All rhymes →Cite this entry
APA
massless. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/massless
MLA
“massless.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/massless. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “massless,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/massless.
Source: massless on Wiktionary, CC BY-SA 4.0.