As a noun oval
is oval.
As an adjective geospherical is
of or pertaining to the geosphere.
oval
English
Noun
(
en noun)
A shape rather like an egg or an ellipse.
A sporting arena etc. of this shape.
Usage notes
* Note: an ellipse is a precise mathematical shape, but an oval is not.
Adjective
(
en adjective)
Having the shape of an oval.
Of or pertaining to an ovum.
- oval conceptions
Derived terms
* ovaline
* ovalish
* ovally
Usage notes
The adjectives oval, ovate, and ovoid all come from roots meaning "egg-shaped". They are usually denotatively synonymous. A connotation of one end being bigger than the other (which is often true of eggs) may or may not be implied. Of the three, oval is the one mostly likely to connote a symmetrical ellipse.
geospherical
English
Adjective
(-)
Of or pertaining to the geosphere. 
