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preemergent

or pre-e·mer·gent

[ pree-i-mur-juhnt ]

adjective

, Horticulture.
  1. of or relating to seedlings before they emerge or appear above ground:

    a preemergent weed-killer.



noun

  1. a preemergence chemical, as a herbicide.

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Word History and Origins

Origin of preemergent1

First recorded in 1955–60; pre- + emergent

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preemergencepreemie