To become white or whiter; to be whitened or blanched by excluding the light of the sun, as, plants.
- Botany To cause (a plant) to develop without chlorophyll by preventing exposure to sunlight.
- To cause to appear pale and sickly: a face that was etiolated from years in prison.
- To make weak by stunting the growth or development of.
- Botany To become blanched or whitened, as when grown without sunlight.