noun, formally a plural of insigne, but usually used as a singular with plural in·sig·ni·a or in·sig·ni·as.
- a badge or distinguishing mark of office or honor: a military insignia.
- a distinguishing mark or sign of anything: an insignia of mourning.
noun
noun plural -nias or -nia
- a badge or emblem of membership, office, or dignity
- a distinguishing sign or mark
1640s, from Latin insignia, neuter plural of insigne “badge, mark,” from in- “in” (see in- (2)) + signum “mark” (see sign). Singular is insigne.