clinostat
noun
cli·no·stat
ˈklīnəˌstat
plural -s
: an apparatus consisting of a slowly revolving disk usually regulated by clockwork by means of which the action of external agents (as light and gravity) on the movements of growing plants mounted on the disk may be modified or eliminated by the change of direction
Word History
Etymology
International Scientific Vocabulary clin- + -stat; originally formed as German klinostat