PL

Pl is a two-letter combination that appears in several disparate contexts, most commonly in codes and abbreviations relating to Poland and the Polish language, but also in publishing and scholarly references.

In language and country codes, pl is the ISO 639-1 code for the Polish language, used to identify Polish in linguistic tagging, software localization, and internationalization. The two-letter code PL is the ISO 3166-1 alpha-2 country code for Poland, a Central European nation. The country code is also reflected in the country’s internet top-level domain, .pl, and in international vehicle registration marks, where Poland is abbreviated as PL.

Other uses include its appearance in publishing and document notation. In some older scientific and reference works, Pl. is used as an abbreviation for Plate, referring to a numbered plate or plate illustration associated with a figure or plate section in the text.

Because Pl is used in different domains, its meaning depends on context. As a locale or identity marker, it points to Poland or Polish language; in archival or publication contexts, it can signal a plate or illustration. When encountered, the surrounding text usually clarifies which sense is intended.