ob·long 
(ŏblông′, -lŏng′)
(ŏblông′, -lŏng′)adj.
1. Deviating from a square, circular, or spherical form by being elongated in one direction.
2. Having the shape of or resembling a rectangle or ellipse.
3. Botany Having an elongated form with approximately parallel sides: an oblong leaf.
n.
An object or figure, such as a rectangle, with an elongated shape.
[Middle English, from Latin oblongus : ob-, intensive pref. (sense uncertain); see OB- + longus, long; see del-1 in the Appendix of Indo-European roots.]