m 3 e 1 s 1 o 1 n 1
5 letters · 7 points in Scrabble
Meaning
noun an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0
originFrom meso- + -on. Coined by Indian physicist Homi Bhabha in 1939, as a modification of the earlier suggestion mesotron.
Etymology from Wiktionary, CC BY-SA 3.0