massless en · ADJ
Pronunciation
- /ˈmæs.lɪs/ (US)
- /ˈmæs.ləs/ (US)
Etymology
Etymology tree English mass Proto-Indo-European *lewh₁- Proto-Indo-European *lewHs-der. Proto-Germanic *leusaną Proto-Germanic *lausaz Proto-Germanic *-lausaz Proto-West Germanic *-laus Old English -lēas Middle English -les English -less English massless From mass + -less.
Meanings
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(not-comparable) Having no mass.
The photon is a massless particle.
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:
Antonyms
Deriveds
Translations (4)
cmn 無質量 /无质量 (having no mass) · fi massaton (having no mass) · ru безма́ссовый (having no mass) · de masselos (having no mass)