elementary

IPA: ɛɫʌmˈɛntri

Relating to the basic, essential or fundamental part of something.
Relating to an elementary school.
(physics) Relating to a subatomic particle.
(archaic) Sublunary; not celestial; belonging to the sublunary sphere, to which the four classical elements (earth, air, fire and water) were confined; composed of or pertaining to these four elements.

Examples of "elementary" in Sentences

As well, we need more Catholics who believe along the lines of Fr. Schall in elementary and high school administration.
The hackers, who call themselves LulzSec, said they pulled off what they described as an elementary attack to highlight Sony's "disgraceful" security.
Specifically, there aren't enough students in elementary and high school with an interest in STEM and there aren't enough university graduates in STEM to fill current and future open positions.
Strictly speaking, the term elementary as applied to most of the particles in the nucleus is inaccurate, for scientists now believe that all the particles except electrons are made of still more elementary particles called quarks.
The phrase is not stronger than that with which the Grammar of Science challenged the fight: Anything more hopelessly illogical than the statements with regard to Force and Matter current in elementary textbooks of science, it is difficult to imagine, opened Mr. Pearson, and the responsible author of the elementary textbook, as he went on to explain, was Lord Kelvin himself.