im

noun, plural IMs, IM’s

1. instant message.
2. instant messaging.

verb (used without object), IM’d or IMed, IM’ing or IMing.

3. instant message.

1. Swimming. individual medley.
2. Sports. intramural.
3. Also I.M. Isle of Man.

1. a plural ending occurring in loanwords from Hebrew: cherubim.

1. contraction of I am.

1. variant of in-² before b, m, p: imbrute; immigrate; impassion.

1. variant of in-³ before b, m, p: imbalance; immoral; imperishable.

1. variant of in-¹ before b, m, p: imbed; immure; impose.

the internet domain name for

1. Isle of Man

abbreviation for

1. computing instant messaging
2. Also: i.m. intramuscular
3. chess International Master

prefix

1. a variant of in- 1, in- 2

contraction of

1. I am

variant of in- before -b-, -m-, -p-, in the sense of “not, opposite of” (immobile, impersonal) as well as “in, into” (implant, impoverish). See in-. In some English words it alternates with em- (1).

abbr.

1. internal medicine
2. intramuscular