The Zan languages, or Zanuri (Georgian: ზანური ენები) or Colchidian, are a branch of the Kartvelian languages constituted by the Mingrelian and Laz languages. The grouping is disputed as some Georgian linguists consider the two to form a dialect continuum of one Zan language. This is often challenged on the most commonly applied criteria of mutual intelligibility when determining borders between languages, as Mingrelian and Laz are only partially mutually intelligible, though speakers of one language can recognize a sizable amount of vocabulary of the other, primarily due to semantic loans, lexical loans and other areal features resulting from geographical proximity and historical close contact common for dialect continuums.
The term Zan comes from the Greco-Roman name of one of the chief Colchian tribes, which is almost identical to the name given to the Mingrelians by the Svans (მჷ-ზა̈ნ mə-zän). Georgian linguist Akaki Shanidze proposed the name "Colchidian" for Zan.
