An identifier in a terminological entry that indicates the name of a language used for an individual object (as opposed to the object language of a language section or of the database per se) as specified by IETF 3066, wherein a language tag consists of a primary sub-tag consisting of a language identifier from ISO 639-1 or 639-2 followed by a hyphen (no space) followed optionally by a second subtag consisting of a country code taken from ISO 3166.