1) Gravitational instrument
Found on
https://www.crosswordclues.com/clue/clinostat
A clinostat is a device which uses rotation to negate the effects of gravitational pull on plant growth (gravitropism) and development (gravimorphism). It has also been used to study the effects of microgravity on cell cultures and animal embryos. A single axis (or horizontal) clinostat consists of a disc attached to a motor. They were originally ...
Found on
http://en.wikipedia.org/wiki/Clinostat
• (n.) An apparatus consisting of a slowly revolving disk, usually regulated by clockwork, by means of wich the action of external agents, as light and gravity, on growing plants may be regulated or eliminated.
Found on
http://thinkexist.com/dictionary/meaning/clinostat/
(from the article `Sachs, (Ferdinand Gustav) Julius von`) ...in trees, the importance of tissue tension in promoting organ growth, and the influence of light and gravity in determining the growth rings and ...
Found on
http://www.britannica.com/eb/a-z/c/98
Cli'no·stat noun [ Greek ... to incline + ... to make to stand.]
(Botany) An apparatus consisting of a slowly revolving disk, usually regulated by clockwork, by means of wich the action of external agents, as light and gravity, on growing plants may be regulated or eliminated.
Found on
http://www.encyclo.co.uk/webster/C/93
No exact match found.
