thinning
verb
Definitions
To make thin or thinner.
To become thin or thinner.
Example: The crowds thinned after the procession had passed: there was nothing more to see.
To dilute.
To remove some plants or parts of plants in order to improve the growth of what remains.
noun
Definitions
Process of removing plants or parts of plants to facilitate the growth of other plants
Wood, leaves, or other plant parts removed during the process of thinning
The action or result of reducing thickness, density, or number
adjective
Definitions
Becoming less thick, dense, or numerous
Example: thinning hair