Definition of speciose in English:

speciose

Pronunciation /ˈspiːʃɪəʊs/ /ˈspiːʃɪəʊz/ /ˈspiːsɪəʊs/

adjective

Biology
  • Of a taxon or other group of organisms: comprising many species; species-rich.

Origin

1930s; earliest use found in Copeia. From speci- + -ose.