vellus hair
US /ˈvel.əs her/
UK /ˈvel.əs her/

1.
pelo vellus, lanugine
short, fine, light-colored, and barely noticeable hair that develops on most of a person's body during childhood
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Unlike terminal hair, vellus hair is very fine and lacks pigment.
A differenza dei peli terminali, i peli vellus sono molto sottili e privi di pigmento.
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During puberty, vellus hair can transform into terminal hair in certain areas.
Durante la pubertà, i peli vellus possono trasformarsi in peli terminali in alcune aree.