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单词 concentration
释义

WordReference Random House Learner's Dictionary of American English © 2024
con•cen•tra•tion /ˌkɑnsənˈtreɪʃən/USA pronunciation   n. 
    1. [uncountable] the directing of one's efforts to one point:will need all her concentration to perform a triple toe jump.
  • the bringing to a single point: [uncountable]The party worked for the concentration of power in the hands of the few.[countable]large concentrations of immigrants.

  • WordReference Random House Unabridged Dictionary of American English © 2024
    con•cen•tra•tion  (kon′sən trāshən),USA pronunciation n. 
    1. the act of concentrating;
      the state of being concentrated.
    2. exclusive attention to one object;
      close mental application.
    3. something concentrated:a concentration of stars.
    4. [Mil.]
      • the assembling of military or naval forces in a particular area in preparation for further operations.
      • a specified intensity and duration of artillery fire placed on a small area.
    5. the focusing of a student's academic program on advanced study in a specific subject or field.
    6. Chemistry(in a solution) a measure of the amount of dissolved substance contained per unit of volume.
    7. Also called memory. [Cards.]a game in which all 52 cards are spread out face down on the table and each player in turn exposes two cards at a time and replaces them face down if they do not constitute a pair, the object being to take the most pairs by remembering the location of the cards previously exposed.
    • concentr(ic) + -ation 1625–35

    Collins Concise English Dictionary © HarperCollins Publishers::
    concentration /ˌkɒnsənˈtreɪʃən/ n
    1. intense mental application; complete attention
    2. the act or process of concentrating
    3. something that is concentrated
    4. the strength of a solution, esp the amount of dissolved substance in a given volume of solvent, usually expressed in moles per cubic metre or cubic decimetre (litre)
    5. the act of bringing together military forces
    6. the application of fire from a number of weapons against a target
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    更新时间:2025/7/3 6:04:35