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therein

[th air-in] /ˌðɛərˈɪn/
adverb
1.
in or into that place or thing.
2.
in that matter, circumstance, etc.
Origin
1000
before 1000; Middle English therin, Old English thǣrin. See there, in
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for therein
  • therein lies the paradox of the natural-gas powered car.
  • therein lays the benefit because to their own self-interest they're going to keep that thing immaculately clean.
  • It's face-on to us, allowing us to see its magnificent spiral arms and all the structure therein.
  • And therein lies the peculiar and precise horror of parasites.
  • Then, go read the good doctor's post and follow the links therein.
  • There are some amazing nuggets of wisdom contained therein.
  • Indigenous recycling plans are developing rapidly, and therein lies the danger.
  • If any one is in doubt, try to recreate what is written therein.
  • And therein lies the problem, for all were published in well-respected peer-reviewed journals.
  • But what one politician can mandate, another can terminate-and therein lies one of the biggest risks for clean energy.
British Dictionary definitions for therein

therein

/ˌðɛərˈɪn/
adverb
1.
(formal) in or into that place, thing, etc
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 therein
adv.

Old English þærin; see there + in.

Online Etymology Dictionary, © 2010 Douglas Harper
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