preemergent / ˌpri ɪˈmɜr dʒənt /

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preemergent 的 2 个定义

adj. 形容词 adjective

Horticulture.

  1. of or relating to seedlings before they emerge or appear above ground: a preemergent weed-killer.
n. 名词 noun
  1. a preemergence chemical, as a herbicide.