Massless

//ˈmæs.ləs// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Having no mass. not-comparable

    "The photon is a massless particle."

Example

More examples

"The photon is a massless particle."

Etymology

From mass + -less.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.