etiolate

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. Botany To cause (a plant) to develop without chlorophyll by preventing exposure to sunlight.
2. v. To cause to appear pale and sickly: a face that was etiolated from years in prison.
3. v. To make weak by stunting the growth or development of.
4. v. Botany To become blanched or whitened, as when grown without sunlight.

Century Dictionary and Cyclopedia

1. To grow white from absence of the normal amount of coloring matter, as the leaves or stalks of plants; be whitened by exclusion of the light of the sun, as plants: sometimes, in pathology, said of persons.
2. To blanch; whiten by exclusion of the sun's rays or by disease.
3. Synonyms Blanch, etc. See whiten.
4. Also etiolize.

Wiktionary

1. v. To make pale through lack of light, especially of a plant.
2. v. To make a person pale and sickly-looking.
3. adj. etiolated

GNU Webster's 1913

1. v. To become white or whiter; to be whitened or blanched by excluding the light of the sun, as, plants.
2. v. (Med.) To become pale through disease or absence of light.
3. v. To blanch; to bleach; to whiten by depriving of the sun's rays.
4. v. (Med.) To cause to grow pale by disease or absence of light.
5. adj. Having a blanched or faded appearance, as birds inhabiting desert regions.

WordNet 3.0

1. v. bleach and alter the natural development of (a green plant) by excluding sunlight
2. adj. (especially of plants) developed without chlorophyll by being deprived of light
3. v. make weak by stunting the growth or development of
4. v. make pale or sickly