Equilateral
/ˌiː.kwɪˈlæt.ər.əl/noun
Having all sides equal in length.
Did you know?Equilateral comes from Latin roots that mean “equal” and “side,” and its geometry became a symbol of harmony, stability, and sacred proportion in later mystical traditions.
Etymological Timeline
Latin
Latin
aequālis
“equal, even”
Latin
Latin
latus
“side”
Late Latin
Latin
aequilateralis
“having equal sides”
Middle French
French
équilatéral
“equilateral”
16th Century
English
equilateral
“having equal sides”