sy-
1
variant of syn- before s followed by a consonant and before z: systaltic; syzygy.
sy-variant of syn-, before s followed by a consonant, and before z, as in systaltic.
sy-
form of syn- before -s- or -z-.
sy-
prefix. the form of syn- before z or before s plus a consonant, as in syzygy, system.
S.Y.
steam yacht.