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antidesiccant

American  
[an-tee-des-i-kuhnt, an-tahy-] / ˌæn tiˈdɛs ɪ kənt, ˌæn taɪ- /

noun

Horticulture.
  1. a substance or material applied to a plant, as by spraying, to inhibit moisture loss during transplanting.


Etymology

Origin of antidesiccant

anti- + desiccant