actinon
[
ak
-t
uh
-non]
/ˈæk təˌnɒn/
noun
,
Chemistry
1.
a chemically inert, gaseous, short-lived isotope of radon that is a member of the
actinium series
.
Symbol:
An;
atomic number:
86;
atomic weight:
219.
Also called
actinium emanation
.
Origin
1925-30;
<
Neo-Latin;
see
actinium
,
-on
2
British Dictionary definitions for
actinon
actinon
/
ˈæktɪˌnɒn
/
noun
1.
a radioisotope of radon that is a decay product of radium. Symbol: An or
219
Rn; atomic no: 86; half-life: 3.92s
2.
another name for
actinide
Word Origin
C20: New Latin, from
actinium
+
-on