The elementary parts of something you learn are the simplest, beginning, and first things that you learn about it.
One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based.
Pertaining to the elements, first principles, and primary ingredients, or to the four supposed elements of the material world; as, elemental air.
pure substances, such as oxygen and gold,, that comprise the Periodic Table
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