Desiccation/ˌdesɪˈkeɪʃn/ Definition 1 of 3Pro Tip 1/3Environmental Impact Consider 'desiccation' to imply not just drying, but often harm to ecosystems. Human activities have led to the desiccation of numerous wetlands. Pro Tip 2/3Intensity Variation 'Desiccation' can be gradual or swift, affecting how we talk about climate effects. Climate change threatens gradual desiccation of the rainforest. Pro Tip 3/3Preventive Measures Desiccation is often a negative event that prompts actions to stop it. Farmers built a dam to combat the desiccation of their croplands.