- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
mount
-
accusatory
-
traits
-
erect
-
sob
-
half-moon
-
numb
-
lay off
-
striation
-
demonstrate
- Hide translation
tropism
tropism /ˈtroʊpɪzəm/
noun
-
An involuntary orienting response; positive or negative reaction to a stimulus source
(
tropism
)
an involuntary orienting response; positive or negative reaction to a stimulus source