cissoid


Also found in: Dictionary, Wikipedia.

cissoid

[′sis‚ȯid]
(mathematics)
A plane curve consisting of all points which lie on a variable line passing through a fixed point, and whose distance from the fixed point is equal to the distance between the intersections of the line with two given curves.
Mentioned in ?
References in periodicals archive ?
cissoides began to germinate at the fourth week and it had SGI values from 1.63 to 1.86.
cissoides showed ovate-elliptical shaped leaves of 7x4cm, with a membranaceous consistency and the presence of three main veins with prickle-like structures on the abaxial face (Fig.
cissoids, reinforce the idea that the low germination rates found for Smilax polyantha were not only related to temperature variation, substrate or light, but to an intrinsic factor of its metabolism and it thus can be an adaptation strategy of this species to the environment.
cissoides, confirming thus, the highest Speed Germination Indices for both species.