01 a. Having only one principle or constituent part; consisting of a single element; simple; uncompounded; as, an elementary substance.
-
1.
Having only one principle or constituent part; consisting of a single element; simple; uncompounded; as, an elementary substance.
-
2.
Pertaining to, or treating of, the elements, rudiments, or first principles of anything; initial; rudimental; introductory; as, an elementary treatise.
-
3.
Pertaining to one of the four elements, air, water, earth, fire.