What does the word nucleus mean?

Usage examples for nucleus

  1. In England it takes a bishop to make a city, but here the nucleus needed is a wheat elevator, red against the setting sun. – The New North by Agnes Deans Cameron
  2. They know many of them by heart; but I make them sit in class, and each, in turn, read one word, in order to teach them to keep the place, and when they finish a verse, I ask them to find some word, and often make it the nucleus of a group of words of the same kind, to be written upon the black- board and slates as above. – Guide to the Kindergarten and Intermediate Class and Moral Culture of Infancy. by Elizabeth P. Peabody Mary Mann
  3. The friar, who represents the third Conservative nucleus, is Father Martin Lafuerza. – Cæsar or Nothing by Pío Baroja Baroja
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