Below are a few of the acronyms (abbreviations) used in SharePoint

Acronym Description
SPSFAQ SharePoint Portal Server Frequently Asked Questions
SS Sharepoint Server
STS SharePoint Team Services
SCA SharePoint Central Administration
SP Sharepoint
SDPS SharePoint Deployment Planning Services
SPF SharePoint Foundation
SLK SharePoint Learning Kit
SPIF SharePoint Integration Framework
SPOM SharePoint Object Model
SPDS Sharepoint Deployment Planning Services
SPPS SharePoint Portal Server
SSMM SharePoint Site Migration Manager
SPSD Sharepoint Solution Deployer
SPS Sharepoint Portal Server
SPSF SharePoint Software Factory