(US, government, military, espionage, aerospace) Initialism of National Reconnaissance Office launch.. An NRO spacelaunch for delivering a high security government payload into space.

(biology) A carrier for making antigens. Because of its large size and distant relation to humans and many test animals, KLH causes a large antigenic response. When paired with a hapten, the hapten...

comparative form of sunny: more sunny

A particular steroid glycoside.