The faculty of perceiving the relative positions of objects in the external world.

(05 Mar 2000)

space sicknessmedical dictionary

Dizziness as result of changes in inner ear resulting from absence of gravity.

Synonyms: physiologic vertigo.

(05 Mar 2000)

space simulationmedical dictionary

An environment simulating one or more parameters of the space environment, applied in testing space systems or components. Often, a closed chamber is used, capable of approximating the vacuum and normal environments of space. This also includes simulated extravehicular activity studies in atmosphere exposure chambers or water tanks.

(12 Dec 1998)

spaces of iridocorneal anglemedical dictionary

Irregularly shaped endothelium-lined spaces within the trabecular reticulum, through which the aqueous filters to reach the sinus venosus sclerae.

Synonyms: spatia anguli iridocornealis, ciliary canals, Fontana's spaces.

(05 Mar 2000)

Pressure suits for wear in space or at very low ambient pressures within the atmosphere, designed to permit the wearer to leave the protection of a pressurised cabin.

(12 Dec 1998)