(mathematics, geometry) 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).

A kind of spiral curve found in certain univalve shells.

plural of conchospiral

The measurement of shells or their curves.

(zoology) Any clam shrimp of the former order Conchostraca.

plural of conchoid

plural of conchology

plural of conchostracan

simple past tense and past participle of conchologize

(intransitive) To engage in conchology; to collect and study shells.