Abbreviations beginning with S

SYNDEXSyndicated Exclusivity (overlapping cable TV coverage areas)
Business

SYNDUEXSyndicat National des Entrepreneurs de Travaux
International » French

SYNEGSyndicat National de l'Equipement des Grandes Cuisines (French: National Union of Large Kitchen Equipment)
Academic & Science

SYNGAP1Synaptic Ras GTPase-activating Protein 1
Medical » Pediatric

SYNIALSyndicat National des Installateurs et Télésurveilleurs d'Alarme (French security companies union)
Academic & Science

SYNMSyntroleum Corporation
Business » NASDAQ Symbols

SYNMASSynchronous Missile Alarm System
Governmental

SYNONYMSimilar, Yet Not Objective, Not Yet Matching ;-)
Miscellaneous » Funnies

SYNPSynchronization Profile
Computing » IT

SYNPREFHSyndicat National des Pharmaciens des Etablissements Publics de Santé
Academic & Science

SYNSSociety of Young Network Scientists
Academic & Science » Societies

SYNSSouthampton York Natural Scenes
Miscellaneous » Unclassified

SYNSSurely You're Not Serious
Miscellaneous