ex·trav·a·sate /ɪkˈstrævəˌset, ˌzet/
  (vt.)使從脈管中溢出(vi.)溢出滲出物
  ex·trav·a·sate /ɪkˈstrævəˌset, ˌzet/ 動詞
  外滲,外滲物
  Ex·trav·a·sate v. t. [imp. & p. p. Extravasated p. pr. & vb. n. Extravasating ]  To force or let out of the proper vessels or arteries, as blood.
  Ex·trav·a·sate v. i.  Physiol. To pass by infiltration or effusion from the normal channel, such as a blood vessel or a lymphatic, into the surrounding tissue; -- said of blood, lymph, etc.
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  extravasate
       v 1: force out or cause to escape from a proper vessel or channel
       2: become active and spew forth lava and rocks; "Vesuvius
          erupts once in a while" [syn: erupt, belch]
       3: geology: cause molten material, such as lava, to pour forth