Adjective
the long illness left him frail and underweight
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Adjective
Derived by dividing someone's weight in kilograms by the square of their height in meters, a BMI number classifies a person as underweight (less than 18.5), normal weight (18.5 to 24.9), overweight (25 to 29.9) or obese (30 or more).—Lydia Denworth, Scientific American, 1 Jan. 2024 The California Department of Fish and Wildlife (CDFW), along with the U.S. Fish and Wildlife Service (USFWS) and other non-governmental partners, have been working to collect and rehabilitate the birds, many of which are anemic, dehydrated and underweight.—Christian Thorsberg, Smithsonian Magazine, 15 May 2024 The 2-week-old kitten was dehydrated, underweight, had minor cuts and had an upper respiratory infection.—Helena Wegner, Sacramento Bee, 10 May 2024 She was deemed underweight on arrival at the shelter, WJCL reports.—Mark Price, Miami Herald, 8 May 2024 See all Example Sentences for underweight
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'underweight.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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