tardyon

== English == === Etymology === Blend of tardy +‎ tachyon or tardy +‎ -on. === Pronunciation === (Received Pronunciation) IPA(key): /ˈtɑː.di.ɒn/ (General American) IPA(key): /ˈtɑɹ.di.ɑn/ === Noun === tardyon (plural tardyons) (physics) Any particle with non-zero mass (i.e. one that travels more slowly than the speed of light). ==== Synonyms ==== (particle with non-zero mass): bradyon, ittyon, massive particle ==== Derived terms ==== tardyonic ==== Translations ==== ==== See also ==== tachyon luxon === Anagrams === Drayton