re·tard /rɪˈtɑrd/
 阻止,延遲(vt.)妨礙,延遲,遲緩(vi.)減速,延遲


 re·tard /rɪˈtɑrd/ 及物動詞
 使延緩


 Re·tard v. t. [imp. & p. p. Retarded; p. pr. & vb. n. Retarding.]
 1. To keep delaying; to continue to hinder; to prevent from progress; to render more slow in progress; to impede; to hinder; as, to retard the march of an army; to retard the motion of a ship; -- opposed to accelerate.
 2. To put off; to postpone; as, to retard the attacks of old age; to retard a rupture between nations.
 Syn: -- To impede; hinder; obstruct; detain; delay; procrastinate; postpone; defer.


 Re·tard, v. i. To stay back. [Obs.]


 Re·tard, n.
 1. Retardation; delay.
 Retard of the tide, or  Age of the tide, the interval between the transit of the moon at which a tide originates and the appearance of the tide itself.  It is found, in general, that any particular tide is not principally due to the moon's transit immediately proceeding, but to a transit which has occured some time before, and which is said to correspond to it. The retard of the tide is thus distinguished from the lunitidal interval. See under Retardation. --Ham. Nav. Encyc.

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 retard
      n : a person of subnormal intelligence [syn: idiot, imbecile,
           cretin, moron, changeling, half-wit]
      v 1: slow the growth or development of; "The brain damage will
           retard the child's language development" [syn: check,
           delay]
      2: cause to move more slowly or operate at a slower rate; "This
         drug will retard your heart rate"
      3: be delayed
      4: lose velocity; move more slowly; "The car decelerated" [syn:
          decelerate, slow, slow down, slow up] [ant: accelerate]