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What does AT WT stand for?

AT WT stands for Atomic Weight (also seen as AWT, without the space)

This definition appears very frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

Samples in periodicals archive:

Russian chemist Dmitri Mendeleev gets the credit for arranging the elements according to their atomic weights.
Named for medium atomic weight elements (though neither are actually elements), timedetectives Sapphire (Joanna Lumley) and Steel (David McCallum) materialised out of the ether to repair breaks in the fabric of time in order to save the world from alien intervention.