Pronunciation: ə - ' then-ti- ˌ k ā t, o ̇ -
Function: transitive verb
Inflected Form: -cat · ed ; -cat · ing
Date: 1652
: to prove or serve to prove the authenticity of < authenticate a document>
synonyms see CONFIRM
– au · then · ti · ca · tion \ - ˌ then-ti- ' k ā -sh ə n \ noun
– au · then · ti · ca · tor \ - ' then-ti- ˌ k ā -t ə r \ noun