- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
1 esdras
-
purpose
-
expedient
-
penny
-
addictive
-
active transport
-
requisite
-
adiantum
-
abscissa
-
chums
- Hide translation
actinon
actinon /ˈækˌtɪnɒn/
noun
-
Any of a series of radioactive elements with atomic numbers 89 through 103
(
actinide
, actinoid
, actinon
)
any of a series of radioactive elements with atomic numbers 89 through 103