lanugo


la·nu·go

noun \lə-ˈnü-(ˌ)gō, -ˈnyü-\

Definition of LANUGO

:  a dense cottony or downy growth of hair; specifically :  the soft woolly hair that covers the fetus of some mammals

Origin of LANUGO

Latin, down, from lana wool — more at wool
First Known Use: 15th century

la·nu·go

noun \lə-ˈn(y)ü-(ˌ)gō\   (Medical Dictionary)

Medical Definition of LANUGO

: a dense cottony or downy growth of hair; specifically : the soft downy hair that covers the fetus of some mammals

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