into

[ in-too; unstressed in-too, -tuh ]
/ ˈɪn tu; unstressed ˈɪn tʊ, -tə /

preposition

adjective

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) = x2 for every integer.

Origin of into

before 1000; Middle English, Old English; see in, to
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for into

into

/ (ˈɪntuː, unstressed ˈɪntə) /

preposition

to the interior or inner parts ofto look into a case
to the middle or midst of so as to be surrounded byinto the water; into the bushes
against; up againsthe drove into a wall
used to indicate the result of a transformation or changehe changed into a monster
maths used to indicate a dividendthree into six is two
informal interested or enthusiastically involved inI'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

Idioms and Phrases with into

into

In addition to the idioms beginning with into

  • into account
  • into effect
  • into line
  • into one's head
  • into question
  • into the bargain
  • into the blue
  • into the drink
  • into thin air

also see:

  • be into

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.