etiolation The state of plants that have been grown in the dark: they are not green, having little or no chlorophyll, and they have very long internodes and rudimentary leaf growth. These features associated with etiolation ensure, under natural conditions, that the shoot is carried towards the light as rapidly as possible.

etiolation The state of plants that have been grown in the dark: they are not green, having little or no chlorophyll, and have very long internodes and rudimentary leaf growth. These features associated with etiolation ensure, under natural conditions, that the shoot is carried towards the light as rapidly as possible.

etiolation The abnormal form of growth observed when plants grow in darkness or severely reduced light. Such plants characteristically have blanched leaves and shoots, excessively long shoots, and reduced leaves and root systems.