mathesis /mə-thēˈsis or (obsolete) mathˈi-sis/

Mental discipline, esp mathematical

• trilingualism
• trilingualisms
• triliteral
• triliteralism
• triliteralisms
• trilith
• trilithic
• trilithon
• trilithons
• triliths
• trill
• trilled
• trilling
• trillings
• trillion
• trillions
• trillionth
• trillionths
• trillium
• trilliums
• trillo
• trilloes
• trills
• trilobate
• trilobated