'Equilateral shell' definitions:
Definition of 'Equilateral shell'
From: GCIDE
- Equilateral \E`qui*lat"er*al\, a. [L. aequilateralis; aequus equal + latus, lateris, side: cf. F. ['e]quilat['e]ral.] Having all the sides equal; as, an equilateral triangle; an equilateral polygon. [1913 Webster]
- Equilateral hyperbola (Geom.), one whose axes are equal.
- Equilateral shell (Zo["o]l.), 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. [1913 Webster]