S.R.S., _Societatis Regiae Socius_=Fellow of the Royal Society.
S.S. Sabbath School.
SS. Saints.
S.S. Steamship; Screw steamer.
S.S.C. Solicitor before the Supreme Court (Scotland); _Societas Sancti Crucis_=Society of the Holy Cross.
SS.D., _Sanctissimus Dominus_=Most holy Lord (the Pope).
S.S.E. South-south-east.
S.S.W. South-south-west.
ST. Saint; Strait; Street.
STDY. Saturday.
STE., _Sainte_ (Fr.). Fem. of _Saint_.
STER., STEREO. Stereotype.
STER., STG. Sterling.
S.T.P., _Sanctae Theologiae Professor_=Professor of Theology.
STR. Steamer.
SU. Sunday.
SUB. Subject; Suburb.
SUBJ. Subject; Subjunctive.
SUBST. Substitute.
SUF., SUFF. Suffix.
SUP. Superfine; Superior; Superlative; Supreme.
SUP. CT. Superior Court; Supreme Court.
SUPP. Supplement.
SUPR. Supreme.
SUPT. Superintendent.
SURG. Surgeon, Surgery.
SURV.-GEN. Surveyor-general.
S.V., _Sancta Virgo_=Holy Virgin; _Sanctitas Vestra_=Your Holiness.
S.V., _sub voce_=Under the word or title.
S.W. South-west; Senior Warden.
SYM. Symbol.
SYN. Synonym.
SYNOP. Synopsis.
SYST. System.
TAL. QUAL., _talis qualis_=Just as they come, Average quantity.
TAM. Tamil.
TAN. Tangent.
TC. Tierce.
T.C.D. Trinity College, Dublin.
TE. Tellurium.
TECH. Technically; Technology.
TEL., TELEG. Telegram, Telegraph.
TEMP. Temporal; _tempore_=In the time of.
TEN. Tenor.
TEN., TENN. Tennessee.
TER., TERR. Territory.
TERM. Termination.
TEST. Testament.
TEUT. Teutonic.