(zoology) In zoological nomenclature, a name which is formally published, but which had already been used for another taxon; this second use is invalid (as are all subsequent uses) and the name must be replaced.
Preoccupied-name Sentence Examples
One of the two living species was, indeed, described so long ago as the year 1863, under the preoccupied name of Hyracodon, but attracted little or no attention, as its affinities were not fully recognized.
Gruvel submitted to the Linnaean Society a rearrangement of the Lepadidae, unfortunately using for the first of his new families the preoccupied name Anaspidae.
The name Cumacea, however, which he uses cannot be retained, being founded on the preoccupied name Cuma (Milne-Edwards, 1828).