What does the word react mean?

Usage examples for react

  1. My dear Dubois, who began to love me because I made her happy, felt my melancholy react on herself, and tried to make me talk. – The Memoires of Casanova, Complete The Rare Unabridged London Edition Of 1894, plus An Unpublished Chapter of History, By Arthur Symons by Jacques Casanova de Seingalt
  2. The sun acts, but it must also be that the earth and planets react. – New and Original Theories of the Great Physical Forces by Henry Raymond Rogers
  3. How would the court officials react? – The Moghul by Thomas Hoover
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