ELEMENTARY

[adjective] - simple or easy; basicMillions of travellers fail to take elementary precautions.Many adults seem to know little about some of the most elementary science.Elementary services have been provided for the refugee camps.The group had made some elementary mistakes.This book contains a series of elementary exercises for learners.(specialized) Elementary particles are the most simple parts of all matter, such as electrons, protons and neutrons.(UK dated or US) An elementary school is a school which provides the first part of a child's education, usually for children between five and eleven years old.