Definitions For Nucleus

noun

• The central structure of the lens that is surrounded by the cortex
• A part of the cell containing DNA and RNA and responsible for growth and reproduction
• Any histologically identifiable mass of neural cell bodies in the brain or spinal cord
• A small group of indispensable persons or things
• The positively charged dense center of an atom
• (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail
• The central part of most cells that contains genetic material and is enclosed in a membrane
• The central part of an atom that is made up of protons and neutrons
• A central or most important part of something