noun “decade”
 Singular decade, Plural decades
- a period of ten years, especially one that starts with a year ending in 0 and ends with a year ending in 9 Mellen Iech un, fir d'Iwwersetzungen vun den Beispillsätz an d'monolingual Definitioune vun all Wuert ze gesinn. 
 She celebrated a decade of working at the company with a big party. 
- in Roman Catholicism, a set of prayers on a rosary that includes an Our Father, ten Hail Marys, and usually ends with a Glory Be and sometimes the Fatima Prayer During her morning prayers, Maria devotedly recited three decades of the rosary, feeling a deep sense of peace with each repetition.