Cyr·il 
(sîrəl), Saint 827-869.
(sîrəl), Saint 827-869. Christian missionary and theologian who with his brother Saint Methodius (826-885) worked in Moravia, translating the Scriptures into Old Church Slavonic.
- supercritical fluid
- supercurrent
- superdelegate
- superdense
- superdominant
- superduper
- superego
- supereminence
- supereminent
- supereminently
- supererogate
- supererogation
- supererogative
- supererogatory
- superfamily
- superfast
- super featherweight
- superfecta
- superfecundation
- superfetate
- superfetation
- superficial
- superficiality
- superficially
- superficialness