What is NUCLEUS?

The essential part of a typical cell, usually round in outline, and situated near the center. The center around which the mass of a crystal aggregates; al-’. the central element in a compound, as the carbon in hydrocarbons. In physiology, the controlling or motor center of a muscle or organ; also, the deep origin See Xuclei. N., Arciform, an aggregation of nerve- cells in the oblongata between the pyramidal tracts and the arciform fibers. N., Arcuate, the largest of the collections of gray matter in the arciform fibers of tlie pyramidal tracts. N., Balbiani

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Definition of  NUCLEUS