conchoid (English, noun)
expansion: conchoid (plural conchoids)
Senses:
topics: geometry
mathematics
sciences
glosses: Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts).
topics: geography
geology
natural-sciences
glosses: A conchoidal fracture in rock.
Forms:
form: conchoids
tags: plural