ADDN Internet - SMS - Text & Chating Abbreviation

ADDN has various meanings in the Internet - SMS - Text & Chating category. Discover the full forms, definitions, and usage contexts of ADDN in Internet - SMS - Text & Chating.

Addition

Most Common

The addition of atoms to opposite sides of a molecule. (Compare with "syn addition.") OR  a reaction that produces a new compound by combining all of the elements of the original reactants.

Internet - SMS - Text & Chating

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