cissoid

As a noun cissoid is

(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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As an adjective cisoid

is (organic chemistry) describing a synperiplanar spatial arrangement of two conjugated double bonds about the intervening single bond; s-cis.

As a noun cissoid is

(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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As nouns the difference between terms and cissoid

is that terms is while cissoid is (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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As nouns the difference between cissoid and rissoid

is that cissoid is (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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂ while rissoid is (zoology) any of the spiral gastropods of the genus (taxlink) or family (taxlink) , found both in fresh and salt water.

As an adjective cirsoid

is (medicine) varicose.

As a noun cissoid is

(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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As nouns the difference between cissoid and cissid

is that cissoid is (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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂ while cissid is (zoology) any member of the cissidae.

Cissoidal is a related term of cissoid.

As an adjective cissoidal

is of or pertaining to a cissoid.

As a noun cissoid is

(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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As nouns the difference between locus and cissoid

is that locus is a place or locality, especially a centre of activity or the scene of a crime while cissoid is (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, ''c''₁ and ''c''₂, where the distance along the line from ''c''₁ to ''p'' remains constant and equal to the distance from ''p'' to ''c ₂.

As nouns the difference between cissoid and conchoid

is that cissoid is 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 while conchoid is 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).