-on


-on
-on1
a suffix used in the names of subatomic particles (gluon; meson; neutron), quanta (graviton), and other minimal entities or components (cistron; codon; magneton; photon).
[prob. extracted from ION; cf. PROTON]
-on2
a suffix used in the naming of inert gaseous elements: neon.
[ Gk -on, neut. of -os adj. ending]

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Universalium. 2010.