An ancient Greek mathematician famous for writing foundational works about geometry and logical proof; also used to refer to his geometric system.
From Greek personal name Εὐκλείδης. The historical figure lived around 300 BCE in Alexandria, and his name became synonymous with mathematical rigor itself.
Euclid's geometry ruled completely unchallenged for 2,000 years until the 1800s when mathematicians proved alternative geometries could work—showing that even the most obvious-seeming truth isn't always universal!
Complete word intelligence in one call. Free tier — 50 lookups/day.