elliptic

From Ancient Greek ἐλλειπτικός (elleiptikós), from ἐλλείπω (elleípō, “I leave out, omit”).

Elliptic leaf form.

elliptic (not comparable)

1. (geometry) Of or pertaining to an ellipse.
   • 1995, Patrick J. Roache, Elliptic Marching Methods and Domain Decomposition, page 1,

     In this chapter, the history of solving elliptic problems by direct marching methods is reviewed.

2. (mathematics) Of or pertaining to a broad field of mathematics that originates from the problem of calculating arc lengths of an ellipse.

   Elliptic integral

   Elliptic function

   Elliptic curve

3. (mathematics, in combination, of certain functions, equations and operators) That has coefficients satisfying a condition analogous to the condition for the general equation for a conic section to be of an ellipse.

   Elliptic partial differential equation

   Elliptic operator

   Elliptic regularity

4. (botany, of leaves) Oval, with a short or no point.

• (of or pertaining to an ellipse): elliptical

• (whose coefficients satisfy a condition): hyperbolic, parabolic

• elliptic curve
• elliptic function
• elliptic integral
• elliptic operator
• elliptic regularity
• isoelliptic

• elliptical
• elliptically
• hypoelliptic