- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
abampere
-
iteration
-
eczema
-
ambition
-
desultory
-
abutment arch
-
solomon bellow
-
incrustation
-
adelaide
-
unmoral
- Hide translation
acorn tube
acorn tube /ˈeɪˌkɔrn tuːb/
noun
-
A small vacuum tube; used at high frequencies
(
acorn tube
)
a small vacuum tube; used at high frequencies