PDL is an initialism for: Politics Democratic Liberal Party (Partidul Democrat Liberal), a former political party in Romania Labour Democratic Party (Partito Democratico del Lavoro), a former political party in Italy Pole of Freedoms (Polo delle Libertà), a former political alliance in Italy The People of Freedom (Il Popolo della Libertà), a former political party in Italy Free Destourian Party (Parti Destourien Libre), a current political in Tunisia Science, mathematics and technology Computing Page description language Perl Data Language and the data type it supports Program Design Language, a method of software construction Progressive download Public Documentation License, used with OpenOffice.org Other uses in science and technology Periodontal ligament Power door locks Propositional dynamic logic Pulsed dye laser Poundal, a unit of force (abbreviated pdl) Polarization Dependent Loss, see Polarization mode dispersion Sport Premier Development League, the former name of a developmental soccer league in the United States and Canada now known as USL League Two. Professional Development League, an English system of youth football leagues. Other uses PDL BioPharma, formerly Protein Design Labs João Paulo II Airport (IATA code PDL) Previously developed land, see Brownfield land Ponta Delgada Airport Poorly Drawn Lines, an absurdist webcomic