Atomic (7)
'atomic' is the definition.
(I know that atomic can be written as nuclear)
This is all the clue.
(Other definitions for nuclear that I've seen before include "Concerning subatomic particles" , "power source" , "Type of energy" , "With dangerous weapons" , "kind of war" .)
'atomic' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tiny that I've seen before include "Minuscule" , "Miniature" , "Really small" , "Minute, diminutive" , "Extremely small" .)