adjective Relating to the basic, essential or fundamental part of something.
adjective Very simple.
adjective Relating to an elementary school.
adjective Fundamental: serving as a building block for more complicated structures or processes. Relating to a subatomic particle. Involving only a single reaction step and transition state. Which performs a row or column operation on another matrix when the two are multiplied; see Elementary matrix on Wikipedia.Wikipedia (Such matrices are called "elementary" because they generate the general linear group). Arising from Vieta's formulas; see Elementary symmetric polynomial on Wikipedia.Wikipedia
adjective Relating to a subatomic particle.
adjective Involving only a single reaction step and transition state.
adjective Which performs a row or column operation on another matrix when the two are multiplied; see Elementary matrix on Wikipedia.Wikipedia (Such matrices are called "elementary" because they generate the general linear group).
adjective Arising from Vieta's formulas; see Elementary symmetric polynomial on Wikipedia.Wikipedia