Termín

n.
(1) A term that if published after 1960 is deemed to denote infrasubspecific rank but that if published before 1961 is to be interpreted according to Article 45.6.3-4.
(2) Those individuals of a species or subspecies differing, in a stated way, from other individuals within the taxon (e.g. larval and adult forms, male and female forms, ecological forms, and seasonal forms).

Source:
International Commission on Zoological Nomenclature (1999) International Code of Zoological Nomenclature. Fourth Edition. - International Trust for Zoological Nomenclature, XXIX + 306 pp.