General English

General Science


  • Position of a planet opposite the Sun in the sky as seen from Earth. A planet at opposition is at its closest approach to the Earth and is visible all night, making opposition the ideal time for observation of the superior planets.


  • The resistance something offers to something else. For example, the opposition a given material offers to the flow of current or to the passage of magnetic flux.
  • The circumstance or state where two periodic quantities having the same frequency and waveshape are out-of-phase by 180°. Also called phase opposition.


  • noun strong disagreement with a suggestion or plan, often including action to try to change or stop it


  • noun hostility towards something
  • noun a movement of the hand muscles in which the tip of the thumb is made to touch the tip of another finger so as to hold something


  • noun an act of opposing


  • noun the action of trying to stop something or of not agreeing to something
  • noun the largest political party which opposes the government
  • noun a group of parties which oppose the government


  • noun the person or team that you or another player or team have to play against