</a> Courtesy Smithsonian Institution National Numismatic Collection. Rare Currency at The Smithsonian The previous coin's older brother the 1849, Gold Rush era double eagle gold coin is valued by collectors the world over. It was the United States of America's first $20 denominational gold coin. Courtesy Smithsonian Institution National Numismatic Collection.
subspecies - (biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species. race. biological science, biology - the science that studies living organisms. taxon, taxonomic category, taxonomic group - animal or plant group having natural relations.
Definition of 'variant'. variant (veÉriÉnt ) A variant of a particular thing is something that has a different form to that thing, although it is related to it. The quagga was a strikingly beautiful variant of the zebra. An intriguing variant to pipelines would be to carry the water using the existing system of canals.