- a combining form meaning “cold,” used in the formation of compound words: psychrometer.
Origin of psychro-
combining form representing Greek psȳchrós cold; akin to psȳ́chein to blow (see psykter)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
from Greek psukhros
Word Origin and History for psychro-
word-forming element meaning "cold," from Latinized form of Greek psykhros "cold," from psykhrein "blow, make cool or cold," from the same root as psyche.
Online Etymology Dictionary, © 2010 Douglas Harper