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Entry 2 senses · 2 variants Webster, 1913

Equilateral

· E·qui·lat·er·al · IPA
01 a. Having all the sides equal; as, an equilateral triangle; an equilateral polygon.
  1. 1.
    Having all the sides equal; as, an equilateral triangle; an equilateral polygon.
Phrases & compounds
Equilateral hyperbola — one whose axes are equal.
Equilateral shell — one in which a transverse line drawn through the apex of the umbo bisects the valve, or divides it into two equal and symmetrical parts.
Mutually equilateral — applied to two figures, when every side of the one has its equal among the sides of the other.
02 n. A side exactly corresponding, or equal, to others; also, a figure of equal sides.
  1. 1.
    A side exactly corresponding, or equal, to others; also, a figure of equal sides.