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[in-too; unstressed in-too, -tuh] /ˈɪn tu; unstressed ˈɪn tʊ, -tə/
to the inside of; in toward:
He walked into the room. The train chugged into the station.
toward or in the direction of:
going into town.
to a point of contact with; against:
backed into a parked car.
(used to indicate insertion or immersion in):
plugged into the socket.
(used to indicate entry, inclusion, or introduction in a place or condition):
received into the church.
to the state, condition, or form assumed or brought about:
went into shock; lapsed into disrepair; translated into another language.
to the occupation, action, possession, circumstance, or acceptance of:
went into banking; coerced into complying.
(used to indicate a continuing extent in time or space):
lasted into the night; far into the distance.
(used to indicate the number to be divided by another number):
2 into 20 equals 10.
Informal. interested or absorbed in, especially obsessively:
She's into yoga and gardening.
Slang. in debt to:
I'm into him for ten dollars.
Mathematics. pertaining to a function or map from one set to another set, the range of which is a proper subset of the second set, as the function f, from the set of all integers into the set of all perfect squares where f (x) = x 2 for every integer.
Origin of into
before 1000; Middle English, Old English; see in, to Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for into
  • My last column centered on the new difficulties that graduate students face in turning their dissertations into books.
  • There are many factors that go into causing inequality.
  • Programmers continue to plug humorous gems into everyday software.
  • When he took the capsules out two hours later, the contents had turned into tens of thousands of different compounds.
  • Transform your garden space into a retreat with the soft sound of water.
  • Deep inside the super-dense hearts of exploding stars, gravity may squash neutron particles from spheres into cubes.
  • Look into someone's eyes and you can tell if he is happy or sad, truthful or insincere, sober or drunk.
  • Flies that inject eggs into fire ants are being used to fight the invasive ants.
  • Scientists know how to turn a chicken into a dinosaur.
  • Fear of a downgrade has pushed him into more effort to balance the books.
British Dictionary definitions for into


/ˈɪntuː; unstressed ˈɪntə/
to the interior or inner parts of: to look into a case
to the middle or midst of so as to be surrounded by: into the water, into the bushes
against; up against: he drove into a wall
used to indicate the result of a transformation or change: he changed into a monster
(maths) used to indicate a dividend: three into six is two
(informal) interested or enthusiastically involved in: I'm really into Freud these days
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for into

Old English into, originally in to. The word is a late Old English development to replace the fading dative case inflections that formerly distinguished, for instance, "in the house" from "into the house." To be into something, "be intensely involved in," first recorded 1969 in American English.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for into

in the sack

adverb phrase

Doing the sex act; making love: Like Kirkland's book, Tharp's even includes a discussion of what Baryshnikov is like in the sack (1960s+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with into
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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