etiolated

Of a plant or part of a plant: pale and weak because of sunlight deprivation or excessive exposure to sunlight.

[T]he external leaves which enjoy the light are perfectly green, while those within, naturally or artificially covered up and involved in darkness, are blanched or etiolated; they are thereby rendered white, soft, delicate, and tender, and lose the taste and flavour of the native plant in its green state, or retain these very slightly.

If there is too great an accumulation of oxygen, as when a plant is kept in a dark place, then it will grow towards the nearest ray of light, which if it does not reach, it will remain white, or etiolated, and sickly.

Of a plant: intentionally grown in the dark.

It is a fact well known to gardeners, that plants, when blanched, lose many of their active properties; and dandelion thus prepared, is frequently eaten on the continent in salads; [...] The French eat the young roots, and the etiolated leaves, with thin slices of bread and butter; [...]

When deprived of light, says Dr. Irvine, all plants nearly agree in the qualities of their juices. The most pungent vegetables then grow insipid; the highest flavoured, inodorous; and those of the most variegated colours are of a uniform whiteness. [...] The results of analysis perfectly accord with these observations; for etiolated plants are found to yield more saccharine matter, carbonic acid and water, and less inflammable matter than those which are green.

Of an animal or person: having an ashen or pale appearance; also, haggard or thin; physically weak.

Birds inhabiting desert regions have an etiolated appearance.

[I]t muſt be obſerved that both vegetable and animal ſubſtances become bleached white by the ſun-beams when they are dead, as cabbage-ſtalks, bones, ivory, tallow, bees-wax, linen and cotton cloth; and hence I ſuppoſe the copper-coloured natives of ſunny countries might become etiolated or blanched by being kept from their infancy in the dark, or removed for a few generations to more northerly climates.

Lacking in vigour; anemic, feeble.

I am concerned about Joe Bloggs, the ordinary bloke on the shop floor. Whatever esoteric phraseology the Government use and whatever etiolated formulae the Government give birth to, they will not persuade me that if Joe Bloggs can not get an increase which he is claiming because he is prevented from claiming it, that is a statutory policy, whereas if Joe Bloggs can not get the increase he is claiming because his employer is statutorily forbidden to give it to him, that is not a statutory policy. That is nonsense.

Convinced republican that I am, and foe of the Prince [Charles, Prince of Wales] who talks to plants and wants to be crowned "head of all faiths" as well as the etiolated Church of England, I find myself pierced by a pang of sympathy.