Eu·clid·e·an

Relating to or denoting the system of geometry based on the work of Euclid and corresponding to the geometry of ordinary experience.

Of such a nature that the postulates of the Euclidean system of geometry are valid.

Derived from 'eu-' (εὖ; 'well') and 'klês' (-κλῆς; 'fame'), meaning 'renowned, glorious.' The word 'Euclid' is defined as 'a copy of the same,' (i.e., geometry).