Relating to or affecting leaves; of or having to do with the leaves of plants, especially used in agriculture and botany.
From Latin 'folium' (leaf) plus '-ar,' the adjectival suffix, widely used in scientific and agricultural terminology to mean 'relating to leaves.'
Farmers use 'foliar spray' to apply fertilizer directly to a plant's leaves instead of the soil—it works faster because leaves can absorb nutrients directly, which is why plants perk up so quickly!
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