What is "geomalism"

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.

n. (context biology archaic English) The tendency of an organism to respond, during its growth, to the force of gravitation.