- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
which
-
twice
-
20/20
-
medusa
-
flux
-
acidophilus milk
-
let in
-
pigeon breast
-
acoustic reactance
-
rebate
- Hide translation
SD
SD /ˈes ˈdiː/
noun
-
A state in north central United States
(
Coyote State
, Mount Rushmore State
, S.D.
, SD
, South Dakota
)
a state in north central United States