The term 'Mater' is used in a variety of contexts. The crossword solutions for this term include PIA (3 letters), ALMA (4 letters), DURA (4 letters), STABAT (6 letters), and ALMAMATER (9 letters). PIA stands for 'Passion, Integrity, and Achievement, ' which are the core values of many educational institutions. ALMA is Latin for 'nourishing mother, ' and is often used to refer to a school or university. DURA is Latin for 'HARD, ' and is often used to describe something that is difficult or challenging. STABAT is Latin for 'stood, ' and is often used to refer to a mother standing by her child. Finally, ALMAMATER is Latin for 'nourishing mother, ' and is often used to refer to a school or university.