What is the full form of “A.T.O.M.”?

Question

What is the full form of “A.T.O.M.” used in DC’s Legends of Tomorrow for the A.T.O.M. suit worn by Ray Palmer?

Answer 1

Advanced Technology Operating Mechanism.

From the companion show, Arrow:

RAY PALMER: But I’m kind of partial to A.T.O.M. Advanced Technology Operating Mechanism.

_{Arrow, “The Climb”}

Yes, this does seem a bit sillier than merely naming it after the physics concept, but then again, people love funny names like this, even scientists.