signa

imperative verb

sig·​na ˈsig-nə 

: write on label

Word History

Etymology

Latin, indicate, mark, imperative of signare

First Known Use

1896, in the meaning defined above

Medical Definition

signa

imperative verb

sig·​na ˈsig-nə 

: write on label

—used to introduce the signature in writing a prescription

—abbreviation S, Sig