Nectarine trees produce varietals of fruit that commonly have smooth skin, firm flesh and a stone that either removes easily from the flesh or clings to it, giving them further classification as clingstone or freestone.
The ecliptic is an imaginary line that marks the path of the sun. The signs of the Zodiac come from the constellations that lie along this line. As Earth orbits the sun, the sun appears to drift across the background stars. The ecliptic marks out the path of this motion on the sky.
Noun. 1. oval-a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it; the sums of the distances from the foci to any point on an ellipse is constant. ellipse. conic, conic section - (geometry) a curve generated by the intersection of a plane and a circular cone.