Atomic vs Undefined - What's the difference?

As adjectives the difference between atomic and undefined

is that atomic is atomic while undefined is lacking a definition or value.

(physics, chemistry) Of or relating to atoms

A stream of atomic hydrogen is emitted

Of or employing nuclear energy or processes

We built a small atomic bomb in the garage

Infinitesimally small

The hairs on a bedbug are almost atomic

Unable to be split or made any smaller

A bit is an atomic item of data

(computing) Said of an operation that is guaranteed to either complete fully, or not at all.

In order to avoid race conditions, this operation has to be atomic

* molecular (1)

* atomically * atomic bomb * atomic charge * atomic cocktail * atomicity * atomic mass * atomic wedgie * atomic weight

(wikipedia undefined) (-)

Lacking a definition or value.

(mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

The result of division by zero is undefined .

* defined