ter·ti·a.
What is a Tertia?
: a Spanish or Italian infantry regiment of the 16th and 17th centuries.
Is Tertiary a real word?
of the third order, rank, stage, formation, etc.; third.
ter·ti·a.
: a Spanish or Italian infantry regiment of the 16th and 17th centuries.
of the third order, rank, stage, formation, etc.; third.