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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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Example Sentences

Bare patches in the lawn can be cultivated and seeded in early spring, but be aware that preemergent herbicides applied now will impede grass seed germination.

In the spray was a preemergent that would carry over into spring to help with weed control.

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preemergencepreemie