El`e*men"ta*ry (?), a. [L. elementarius: cf. F. 'el'ementaire.]
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.
"Some luminous and fiery impressions in the
elementary region."
J. Spencer.
© Webster 1913.