In Definition

ĭn
inned, inning
preposition
Within the limits, bounds, or area of.
Was hit in the face; born in the spring; a chair in the garden.
American Heritage
Contained or enclosed by; inside; within.
In the room, in the envelope.
Webster's New World
Wearing; clothed by.
To dress in one's best.
Webster's New World
During the course of.
Done in a day.
Webster's New World
At or before the end of.
Return in an hour.
Webster's New World
adverb
From a point outside to one inside.
To invite visitors in.
Webster's New World
To or toward a certain place or direction.
He flies in today, they live ten miles in.
Webster's New World
So as to score, as by crossing home plate in baseball.
Singled the runner in.
American Heritage
Within a place, as of business or residence.
The manager is in before anyone else.
American Heritage
So as to be contained by a certain space or condition.
Webster's New World
Synonyms:
adjective
Inner; inside.
Webster's New World
That is successful or in power.
The in group.
Webster's New World
Incoming; inward.
Took the in bus.
American Heritage
Coming or going inside or inward.
The in door, the in boat.
Webster's New World
Completed, gathered, counted, etc.
The votes are in.
Webster's New World
Synonyms:
noun
A person, group, etc. that is in power, in office, or in a favored position.
Webster's New World
Special influence or favor; pull.
Webster's New World

(in games) The state of a batter/batsman who is currently batting – see innings.

Wiktionary
A re-entrant angle; a nook or corner.
Wiktionary
Wiktionary
Synonyms:
abbreviation
Inch(es)
Webster's New World
Indiana.
Webster's New World
Indiana.
Webster's New World

The ccTLD for India as assigned by the IANA.

Wiktionary
prefix
Not.
Inarticulate. Before l, in- is usually assimilated to il-; before r to ir-; and before b, m, and p to im-.
American Heritage
In; into; within.
Inundation. Before l, in- is usually assimilated to il-; before r to ir-; and before b, m, and p to im-.
American Heritage
suffix
Neutral chemical compound, especially:
American Heritage
A pharmaceutical.
Rifampin.
American Heritage
An antibiotic.
Penicillin.
American Heritage
Antigen.
Tuberculin.
American Heritage
(proscribed, eye dialect) Alternative form of -ing.
Wiktionary
verb
To collect; gather in.
We must in the hay before it rains.
Webster's New World
To enclose.
Webster's New World

(obsolete) To enclose; to take in; to harvest.

Wiktionary
symbol
Indium.
Webster's New World
affix
In, into, within, on, toward.
Webster's New World
No, not, without, non- [insignificant]
Webster's New World
A neutral carbohydrate.
Inulin.
Webster's New World
A glycoside.
Amygdalin.
Webster's New World
A protein.
Albumin.
Webster's New World
idiom
in for
  • Guaranteed to get or have:

    You're in for a big surprise.

American Heritage
in on
  • Informed about; participating in:

    Only one business partner was not in on the illegal scheme.

American Heritage
in that
  • For the reason that.
American Heritage
come in
  • to play the last nine holes of an 18-hole golf course
Webster's New World
have it in for
  • to hold a grudge against
Webster's New World

Idioms, Phrasal Verbs Related to In

Origin of In

  • From Middle English, from Old English in, from Proto-Germanic *in (whence German in, Dutch in, Danish i), ultimately from Proto-Indo-European *en, whence also ultimately Latin in, Irish i, Welsh yn, Ancient Greek ἐν (en) (modern Greek εν (en)), Old Armenian ի (i), Old Church Slavonic vŭ(n)-, Russian в (v), Old Prussian en, Lithuanian į.

    From Wiktionary

  • Middle English from Old English (from in in in1) and from Old French (from Latin) (from in in, within en in Indo-European roots)

    From American Heritage Dictionary of the English Language, 5th Edition

  • ME < OFr & ML < L < IE *ṇ-, initial negative particle, var. of *ne, *nē- > no, L ne-

    From Webster's New World College Dictionary, 5th Edition

  • Middle English from Old French from Latin ne in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From the Latin -īnae, feminine plural form of -īnus (“-ine”).

    From Wiktionary

  • Middle English from Old English en in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • the Old English present participle suffix -ende

    From Wiktionary

  • the Old English verbal noun suffix -ung/-ing.

    From Wiktionary

  • Abbreviation of inch.

    From Wiktionary

  • Variant of –ine

    From American Heritage Dictionary of the English Language, 5th Edition

  • Old English inne

    From Wiktionary

  • see -ine

    From Webster's New World College Dictionary, 5th Edition