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Webster 1913 Edition
Cissoid
Cis′soid
,Noun.
[Gr. [GREEK] like ivy; [GREEK] ivy +
εἶδοσ
form.] (Geom.)
A curve invented by Diocles, for the purpose of solving two celebrated problems of the higher geometry; viz., to trisect a plane angle, and to construct two geometrical means between two given straight lines.
Webster 1828 Edition
Cissoid
CISSOID
,Noun.
Definition 2024
cissoid
cissoid
English
Noun
cissoid (plural cissoids)
- (geometry) Any of a family of curves defined as the locus of a point, P, on a line from a given fixed point and intersecting two given curves, C1 and C2, where the distance along the line from C1 to P remains constant and equal to the distance from P to C2.
- The cissoid of a circle and a line is a conchoid
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cissoid
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