6 letters · 11 points in Scrabble
noun any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1
originFrom Ancient Greek βαρύς (barús, “heavy”) + -on. Coined by Dutch-American physicist Abraham Pais in 1953. Equivalent to baryo- + -on.
Etymology from Wiktionary, CC BY-SA 3.0