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
adjective
2.
contained between the concave sides of two intersecting curves Compare sistroid
Word Origin
C17: from Greek kissoeidēs, literally: ivy-shaped, from kissos ivy