| DECENNARIES | • decennaries n. Plural of decennary. • DECENNARY n. a tithing, also DECENARY. |
| DECENNARY | • decennary adj. Decennial: of or related to a ten-year period. • decennary n. A decennium: a period of ten years. • decennary adj. Alternative form of decenary: of or related to the number ten; containing ten items. |
| DECENNIA | • decennia n. Plural of decennium. • DECENNIUM n. (Latin) a period of ten years. |
| DECENNIAL | • decennial n. The tenth anniversary of an event or happening. • decennial adj. Occurring every ten years. • decennial adj. Of or related to a ten-year period, as a term of office. |
| DECENNIALLY | • decennially adv. Every ten years. • DECENNIAL adv. happening every ten years. |
| DECENNIALS | • decennials n. Plural of decennial. • DECENNIAL n. a ten-year anniversary. |
| DECENNIUM | • decennium n. Synonym of decade: a ten year period. • DECENNIUM n. (Latin) a period of ten years. |
| DECENNIUMS | • decenniums n. Plural of decennium. • DECENNIUM n. (Latin) a period of ten years. |
| DECENNOVAL | • decennoval adj. Of or related to the number nineteen. • decennoval adj. Of or related to a nineteen-year period. • DECENNOVAL adj. (obsolete) relating to the number nineteen. |
| DUODECENNIAL | • duodecennial adj. Consisting of twelve years, occurring in 12-year cycles. • duodecennial adj. Occurring once a duodecade, occurring every 12 years. • DUODECENNIAL adj. recurring twelve years. |
| QUINDECENNIAL | • quindecennial adj. Lasting fifteen years. • quindecennial adj. Happening once in fifteen years. • QUINDECENNIAL n. a fifteenth anniversary. |
| QUINDECENNIALS | • QUINDECENNIAL n. a fifteenth anniversary. |