sig·​nate | \ˈsigˌnāt, -nə̇t\

Definition of signate 

2 : having markings like letters

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First Known Use of signate

1649, in the meaning defined at sense 1

History and Etymology for signate

Latin signatus, past participle of signare to mark, seal, designate

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The first known use of signate was in 1649

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