underlayer

[ uhn-der-ley-er ]
/ ˈʌn dərˌleɪ ər /

noun

a layer lying beneath another; substratum.

Origin of underlayer

First recorded in 1895–1900; under- + layer

Words nearby underlayer

underived, underkill, underlaid, underlap, underlay, underlayer, underlayment, underleaf, underlet, underlie, underline