Definitions
1.AdjectiveUnable to reproduce (or procreate).
2.AdjectiveTerse; lacking sentiment or emotional stimulation, as in a manner of speaking.
3.AdjectiveFruitless, uninspiring, or unproductive.
4.AdjectiveGermless; free from all living or viable microorganisms."a sterile kitchen table"
5.AdjectivePermanently uninhabitable (as in a planet like Earth) to all life, including even microbes.
6.AdjectiveFree from dangerous objects, as a zone in an airport that can be only be entered via a security checkpoint.
7.AdjectiveOf weapons: foreign-made and untraceable to the United States.