Roughly rectangular or elliptical.
Having the horizontal axis of a page longer than the vertical; In landscape orientation.
Having a length and width that are different; not square or circular.
A rectangle with length and width that are different.
An ellipse with minor and major axes that are different.
Something with an oblong shape.
To give an oblong shape to.
To extend so as to form an oblong shape.
Oolitic.
Egg-shaped.