adj. & n.
adj. 1 of the four elements. 2 of the powers of nature (elemental worship). 3 comparable to a force of nature (elemental grandeur; elemental tumult). 4 uncompounded (elemental oxygen). 5 essential.
n. an entity or force thought to be physically manifested by occult means. elementalism n. (in senses 1, 2).
[ med.L elementalis (as ELEMENT) ]