Thn definitions

Thn

1) Ending with tele- 2) Thumbnail
Found on https://www.crosswordclues.com/clue/thn

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ThN

Thorium(III) Nitride Molar mass: 246.0448
Found on http://www.convertunits.com/molarmass/Thorium(III)+Nitride

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thn

then
Found on http://www.noslang.com/dictionary/t/

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