geomalism


From The Collaborative International Dictionary of English v.0.48:

Geomalism \Ge*om"a*lism\, n. [Gr. ge`a, gh^, the earth +
   "omalismo`s a leveling.] (Biol.)
   The tendency of an organism to respond, during its growth, to
   the force of gravitation.
   [1913 Webster]
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