cissoid


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cissoid

(ˈsɪsɔɪd)
n
(Mathematics) a geometric curve whose two branches meet in a cusp at the origin and are asymptotic to a line parallel to the y-axis. Its equation is y2(2a – x)=x3 where 2a is the distance between the y-axis and this line
adj
(Mathematics) contained between the concave sides of two intersecting curves. Compare sistroid
[C17: from Greek kissoeidēs, literally: ivy-shaped, from kissos ivy]
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References in periodicals archive ?
Along the way the curves known as the conchoid and the cissoid were discovered.
The profile of an old, buttressed eucalypt approaches the curve known as cissoid.
CISSOID introduced a high-temperature silicon carbide high-voltage switch with seamless gate control through a simple logic-level 0/5V.