rishon

== English == === Etymology === From Hebrew ראשון (rishón, “first; primary”). === Pronunciation === IPA(key): /ˈɹɪʃɒn/ === Noun === rishon (plural rishons) (physics) A hypothetical fundamental particle in an early preon model. ==== Derived terms ==== antirishon === Anagrams === Hirson, rhinos, orhnis, Rhinos