Tihenevad

Tihenevad is the Estonian verb form meaning "they thin out" or "they become thinner." It is the present tense, third-person plural form of the verb tihenema, which denotes a process of becoming less dense or reducing in thickness.

Morphology and usage notes: The root tihe- expresses density, and the form attaches the suffix that marks the present tense and the plural subject. As a description of a process, tihenevad is used with plural subjects such as groups, layers, or areas to indicate a reduction in density or thickness over time.

Contexts and applications: The term is common in ecological and environmental discourse to describe thinning of vegetation, forest canopies, or stands after disturbances or management actions. It also appears in demography and urban planning to characterize declines in population concentration or land-use density. In geology or materials science, tihenevad can describe thinning of sediment layers, coatings, or other layered structures due to natural or human-induced processes. The usage is typically descriptive and neutral, suitable for reporting observations, analyses, or forecasts.

Relation to other terms: Tihenema is the related verb meaning "to become thinner" or "to thicken" in some contexts, while tihedus denotes density, and tihe is the root adjective meaning dense. The noun form tihenemine can refer to the act or process of thinning. Collectively, these terms are used to discuss changes in density, thickness, or concentration in various fields.