Lan (Polish: à Âan ; German: Lahn; Latin: laneus) is an old unit of field measurement used in Central Europe since the 13th century, its value has varied from one location to another. In Poland a greater à Âan (also Franconian, King's, Old Polish) consisted of 43.2 morgs = 23 to 28 hectares. A lesser à Âan (Cheà Âmno à Âan) was 30 morg â 17,955 hectare.
The term eventually derives from German Lehen, "fee" (feudal land tenure). The term à Âan was also used to indicate an average size of a peasant's tenured farm. à Âan was further subdivided into zagony ("belts") and further into skiby ("slices").
In medieval times the size of a à Âan was anywhere between 3 and 50 hectares, but from the 13th century to 1857 in Great Lesser Poland (with Podkarpacie), the Franconian à Âan was consistently used.