- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
wimp
-
prevailing
-
vulgar
-
stature
-
fundamental
-
turmoil
-
livestock
-
brows
-
scurry
-
dessert plate
- Hide translation
actinide
actinide /ˈækˈtɪnˌaɪd/
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