tropos
turning
tropics
the area of the earth from the equator north to the Tropic of Cancer and south to the Tropic of Capricorn
tropical
the climate of the earth in the tropics
phototropic
(photo - light) turning toward light as leaves and flowers do
heliotrope
(helios - sun) a flower named for its tendency to turn toward the sun
tropophilous
(philia - love) plants or trees which like a change or turning of seasons - hot and cold, wet and dry
thermotropism
(thermos - heat) turning toward heat (as cats do)
tropometer
(metron - measure) an instrument which measures the amount of turning of eyeballs or bones in their sockets
chromotropism
(chroma - color) turning or changing color