SLD

SLD can mean the following:

* In Polish, SLD is short for "Sojusz Lewicy Demokratycznej" which is a Polish political party. In English, this party is called the "Democratic Left Alliance".
* In British politics, the party currently known as the Liberal Democrats used to be called the SLD, which stood for "Social and Liberal Democrats"
* In Geographic Information Systems, a Styled Layer Descriptor.
* SAP System Landscape Directory
* SLD resolution ("Selective Linear Definite" clause resolution) is special kind of resolution that applies only to Horn clauses and which provides the execution mechanism for Prolog.
* SLD tree, Standard Linear Derivation a representation of a Prolog search-tree.
* Superluminescent diode, an edge-emitting semiconductor light source based on superluminescence.
* Second-level domain, an Internet domain directly beneath the top-level domain.
* Symantec Livestate Delivery, software similar to RIS from Microsoft.
* Stanford Large Detector
* Straight line diagram
* Semiconductor laser diode
* One-line diagram another name for Single Line Diagram
* Specific Learning disability
* SLD glass; SLD stands for Special Low Dispersion in this case.
* In the field of Law, SLD may stand for Statute law database, a directory of laws in force in a given jurisdiction such as the UK Statute Law Database.
* .SLD is the Slide file format for AutoCAD
* Supercooled Large Droplet, Atmospheric icing conditions.