1. semidouble - Noun
2. semidouble - Adjective
An office or feast celebrated with less solemnity than the double ones. See Double, n., 8.
Having the outermost stamens converted into petals, while the inner ones remain perfect; -- said of a flower.
Source: Webster's dictionaryIt had three lessons and took the psalms of Matins from the ferial office; the rest of the office was like the semidouble. Source: Internet
Until then, ordinary doubles took precedence over most of the semidouble Sundays, resulting in many of the Sunday Masses rarely being said. Source: Internet
While retaining the semidouble rite for Sundays, Pius X's reform permitted only the most important feast days to be celebrated on Sunday, although commemorations were still made until Pope John XXIII 's reform of 1960. Source: Internet