Shaped like or relating to a bicone; having two cone-like or roughly cone-shaped components.
From bi- (two) plus conical (relating to a cone's shape). This is the fuller adjectival form of biconic, with the standard -al suffix added for emphasis or technical precision.
Biconical lenses in telescopes and microscopes changed science because their two-cone shape lets light bend in ways that single lenses cannot, enabling the discovery of everything from bacteria to distant galaxies.
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