substyle

noun

sub·​style

variants or substile

ˈsəbzˌtīl,

-bˌst-

: a straight line on which the gnomon of a dial is erected and which constitutes the common section of the face of the dial and a plane perpendicular to it passing through the gnomon

Word History

Etymology

sub- + style or obsolete English stile style, from Middle English

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