n. pl. ro·sa·ries
1. Roman Catholic Church
a. A form of devotion to the Virgin Mary, chiefly consisting of three sets of five decades each of the Hail Mary, each decade preceded by the Lord's Prayer and ending with a doxology.
b. One of these sets of decades.
c. A string of beads of 5 or 15 decades on which these prayers are counted.
2. Similar beads used by other religious groups.
[Middle English, rose garden, from Medieval Latin rosārium, rose garden, rosary, from Latin, rose garden, from neuter of rosārius, of roses, from rosa, rose.]
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