Massless
//ˈmæs.ləs//
"Massless" in a Sentence (2 examples)
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.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.