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

1.
vello velloso, lanugo
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 diferencia del vello terminal, el vello velloso es muy fino y carece de pigmento.
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During puberty, vellus hair can transform into terminal hair in certain areas.
Durante la pubertad, el vello velloso puede transformarse en vello terminal en ciertas áreas.