word-forming element meaning "cold, characterized by cold, capable of enduring low temperatures," from Latinized form of Greek psykhros "cold," from psykhrein "blow, make cool or cold," which is perhaps from the same root as yielded psyche.
word-forming element meaning "excessive or irrational fear, horror, or aversion," from Latin -phobia and directly from Greek -phobia "panic fear of," from phobos "fear" (see phobia). In widespread popular use with native words from c. 1800. In psychology, "an abnormal or irrational fear." Related: -phobic.