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\ ˈī-ˈem 
\
\IM'd; IM'ing
Definition of IM
(Entry 1 of 3)
: to send an instant message to
: to communicate by instant message
IM
abbreviationDefinition of IM (Entry 2 of 3)
im-
prefixDefinition of im- (Entry 3 of 3)
— see in-
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Time Traveler for IM
The first known use of IM was in 1994
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