DICT.TW Dictionary Taiwan

 um·bel /ˈʌmbəl/
 傘狀花序,傘形花序

 Um·bel n.  Bot. A kind of flower cluster in which the flower stalks radiate from a common point, as in the carrot and milkweed. It is simple or compound; in the latter case, each peduncle bears another little umbel, called umbellet, or umbellule.
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 umbel
      n : flat-topped or rounded inflorescence characteristic of the
          family Umbelliferae in which the individual flower stalks
          arise from about the same point; youngest flowers are at
          the center