ˌ ̷ ̷ ̷ ̷ˈklīd.ēəˌnizəm, -ˌklīˈtē- noun
( -s )
Usage: usually capitalized
: a philosophy based on the theory that everything is in flux and nothing remains fixed except the logos which is at once law and a ruling element identified with fire and that the world is made of the four elements fire, water, earth, and air which are continually transmuted into one another in fixed measures