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instruction

[in-struhk-shuh n] /ɪnˈstrʌk ʃən/
noun
1.
the act or practice of instructing or teaching; education.
2.
knowledge or information imparted.
3.
an item of such knowledge or information.
4.
Usually, instructions. orders or directions:
The instructions are on the back of the box.
5.
the act of furnishing with authoritative directions.
6.
Computers. a command given to a computer to carry out a particular operation.
Origin
late Middle English
1375-1425
1375-1425; late Middle English instruccio(u)n < Latin instructiōn- (stem of instructiō). See instruct, -ion
Related forms
instructional, adjective
misinstruction, noun
noninstructional, adjective
noninstructionally, adverb
overinstruction, noun
preinstruction, noun
reinstruction, noun
self-instruction, noun
Synonyms
1. tutoring, coaching; training, drill, exercise; indoctrination; schooling. 5. command, mandate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for re instruction

instruction

/ɪnˈstrʌkʃən/
noun
1.
a direction; order
2.
the process or act of imparting knowledge; teaching; education
3.
(computing) a part of a program consisting of a coded command to the computer to perform a specified function
Derived Forms
instructional, adjective
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 re instruction

instruction

n.

c.1400, instruccioun, "action or process of teaching," from Old French instruccion (14c.), from Latin instructionem (nominative instructio) "building, arrangement, teaching," from past participle stem of instruere "arrange, inform, teach," from in- "on" (see in- (2)) + struere "to pile, build" (see structure (n.)). Meaning "an authoritative direction telling someone what to do; a document giving such directions," is early 15c. Related: Instructions.

Online Etymology Dictionary, © 2010 Douglas Harper
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re instruction in Science
instruction
  (ĭn-strŭk'shən)   
A sequence of bits that tells a computer's central processing unit to perform a particular operation. An instruction can also contain data to be used in the operation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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