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.
endoplasmic reticulum. a system of folded membranes, channels, and flattened sacs in the cytoplasm of eukaryotic cells, involved in the synthesis, storage, and transport of various substances necessary to cell function: as the point of attachment for ribosomes, it is especially associated with protein synthesis.INK / CITE ADD TO WORD LIST. noun. The endoplasmic reticulum is defined as a series of folded membranes in the cells which are associated with protein synthesis, storage and the movement of cellular materials.