Because the new propellant provides improved performance and volumetric efficiency compared to hydrazine, more of it can be stored in propellant tanks of the same volume, resulting in a 50-percent increase in spacecraft maneuvering capability for a given volume.
Superficial Anatomy - Definition. In anatomy, superficial is a directional term that indicates one structure is located more externally than another, or closer to the surface of the body. The opposite of superficial is deep. For example, the spine is deep in the body, while the skin is superficial. The term superficial is a relative one.
Definition of exterior. 1  1 : being on an outside surface : situated on the outside. 2  2 : observable by outward signs his exterior quietness is belied by an occasional nervous twitch â Current Biography. 3  3 : suitable for use on outside surfaces.