Definition of "thinning" []

• Present participle of thin. (verb)

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• "The long-term thinning trend is evident from observations, as well as computer modeling of the Arctic climate."
• "Osteoporosis is characterized by the thinning of bone, which leaves it more vulnerable to fractures."
• "We infer from our oxygen isotope measurements in planktonic foraminifera that the Larsen B ice shelf has been thinning throughout the Holocene, and we suggest that the recent prolonged period of warming in the Antarctic Peninsula region, in combination with the long-term thinning, has led to collapse of the ice shelf."