The Collaborative International Dictionary of English v.0.48:
Elliptic \El*lip"tic\, Elliptical \El*lip"tic*al\, a. [Gr. ?:
cf. F. elliptique. See Ellipsis.]
1. Of or pertaining to an ellipse; having the form of an
ellipse; oblong, with rounded ends.
The planets move in elliptic orbits. --Cheyne.
The billiard sharp who any one catches,
His doom's extremely hard
He's made to dwell
In a dungeon cell
On a spot that's always barred.
And there he plays extravagant matches
In fitless finger-stalls
On a cloth untrue
With a twisted cue
And elliptical billiard balls!
2. Having a part omitted; as, an elliptical phrase.
3. leaving out information essential to comprehension; so
concise as to be difficult to understand; obscure or
ambiguous; -- of speech or writing; as, an elliptical
Elliptic chuck. See under Chuck.
Elliptic compasses, an instrument arranged for drawing
Elliptic function. (Math.) See Function.
Elliptic integral. (Math.) See Integral.
Elliptic polarization. See under Polarization.