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preemergent
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pre•e•mer•gent
(prē′i mûr
′
jənt),
USA pronunciation
adj.
[
Hort.
]
Botany
of or pertaining to seedlings before they emerge or appear above ground:
a preemergent weed-killer.
n.
Pest Control
a preemergence chemical, as a herbicide.
Also,
pre′-e•mer
′
gent.
pre
- +
emergent
1955–60
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更新时间:2026/7/3 9:15:59