or·tho·trop·ic 
(ôr′thə-trŏpĭk, -trōpĭk)
(ôr′thə-trŏpĭk, -trōpĭk)adj.
1. Growing toward or away from a stimulus such as gravity, especially along a vertical axis. Used of a plant or plant part.
2. Of or relating to a bridge deck consisting of steel plates supported by ribs underneath.
or′tho·tropi·cal·ly adv.
or·thotro·pism (ôr-thŏtrə-pĭz′əm) n.
- impregnable
- impregnably
- impregnate
- impregnation
- impregnator
- impresa
- impresario
- impress
- impress
- impressibility
- impressible
- impressibly
- impression
- impressionability
- impressionable
- impressionism
- impressionist
- impressionistic
- impressionistically
- impressive
- impressively
- impressiveness
- impressment
- impressure
- imprest