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In biology, a homonym is a name for a taxon that is identical in spelling to another such name, that belongs to a different taxon.. The rule in the International Code of Zoological Nomenclature is that the first such name to be published is the senior homonym and is to be used (it is "valid"); any others are junior homonyms and must be replaced with new names.
senior homonym (zoology): the first legitimate use of the name which generally takes priority; junior homonym (zoology), later homonym (botany): a later and generally illegitimate use, though in some circumstances the later name is allowed to stand; hemihomonym: a homonym across naming authorities that is permitted because any confusion is ...
Some spelling variants are explicitly defined by the Code as being homonyms. Otherwise the one-letter difference rule applies. In species, primary homonyms are those with the same genus and same species in their original combination. The difference between a junior primary homonym and a subsequent use of a name is undefined, but it is commonly ...
A more restrictive and technical definition requires that homonyms be simultaneously homographs and homophones [1] —that is, they have identical spelling and pronunciation but different meanings. Examples include the pair stalk (part of a plant) and stalk (follow/harass a person) and the pair left ( past tense of leave ) and left (opposite of ...
Junior homonyms in the family and genus group – names of families and genera which have identical spelling, but refer to different taxa. Only one of two (or more) such homonyms can be valid; junior family-rank names must typically either change their spelling or be replaced, while junior genus-rank homonyms must be replaced.
Taxonomy is that part of Systematics concerned with topics (a) to (d) above. A whole set of terms including taxonomy, systematic biology, systematics, scientific classification, biological classification, and phylogenetics have at times had overlapping meanings – sometimes the same, sometimes slightly different, but always related and ...
The hierarchy of scientific classification. Taxonomy mnemonics are used to memorize the scientific classification applied in taxonomy. They are usually constructed with a series of words that begin with the letters KPCOFGS, corresponding to the initials of the primary taxonomic ranks.
In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon.The botanical and zoological codes of nomenclature treat the concept of synonymy differently.