species /ˈspiːʃiːz/noun 12forms 1 noun12 •a type of living thing whose males and females can have young that can also have youngThis species of animal is unique to the area. •A category in the classification of organisms, ranking below genus; a taxon at that rank.Hence, in determining whether a form should be ranked as a species or a variety, the opinion of naturalists having sound judgment and wide experience seems the only guide to follow. — 1859 •A type or kind. (Compare race.)What is called spiritualism should, I think, be called a mental species of materialism. — 1871 •A particular type of atom, molecule, ion or other particle. •A mineral with a unique chemical formula whose crystals belong to a unique crystallographic system. •An individual or kind of a biological species. •Coin, or coined silver, gold, or other metal, used as a circulating medium; specie.There was, in the splendour of the Roman empire, a less quantity of current species in Europe than there is now. — 1727 •Either of the two elements of the Eucharist after they have been consecrated. •A component part of compound medicine; a simple. •(no longer used) An image, an appearance, a spectacle. •(no longer used) The image of something cast on a surface, or reflected from a surface, or refracted through a lens or telescope; a reflection.I cast the species of the Sun onto a sheet of paper through a telescope. •(no longer used) Visible or perceptible presentation; appearance; something perceived.Wit,[…]the faculty of imagination in the writer, which searches over all the memory for the species or ideas of those things which it designs to represent. — 1667 formsspecieses