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单词 petr-
释义 petr-
combining form
or petri- or petro-
Etymology: Middle French petr-, petri- & Latin petr- & New Latin petro-, from Greek petr-, petro-, from petros stone & petra rock
1.
 a. : stone : rock
  < petrescent >
  < Petricola >
  < petrogenesis >
 b. : petroleum
  < petroporphyrins >
2. : of or relating to the petrous portion of the temporal bone and
 < petrohyoid >
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