achlyo-, achly-, achlys-, achlu-

(Greek: mist, dimness, darkness)

achluophobia (s) (noun), achluophobias (pl)
A horror of being in the dark or existing in any unlighted areas: An achluophobia involves not going out at night, increased anxiety as evening approaches, not wanting to look outside the window in order to avoid seeing the nocturnal environment, avoidance of looking into dark rooms, and always having some kind of light available.
Achlya
1. A genus of water molds included in the class Oomycetes.
2. A genus of fungus-like organisms of the order Saprolegniales, which form molds on certain fish and insects.
achlys
1. A minimal corneal opacity.
2. The mist that comes over the eyes of someone who is fainting or dying.