Definition of equid in English:



  • A mammal of the horse family (Equidae).

    ‘It is the closest living relative of the domestic horse, and despite a difference in chromosome number, the two species are the only members of the equid family still capable of producing fertile offspring if interbred.’
    • ‘Like all equids, mountain zebras are polygynous.’
    • ‘Here I test whether this assumption holds true by analyzing the feeding strategy of various ungulates, particularly equids.’
    • ‘Domestic equids range worldwide; in the wild equids occur mainly in East Africa and the Near East to Mongolia.’
    • ‘Today only seven species of wild equids remain - three asses, three zebra and one wild horse - and the World Conservation Union now lists most of these as endangered.’
    • ‘This succession of early primitive types with later more advanced forms, and those with their still more advanced descendants, is not unlike the evolution of equids, titanotheres, and other fast-evolving taxa.’
    • ‘Bernor and Harris describe the three species of hipparionine equids found at Lothagam.’
    • ‘The equid and mammoth remains came from the upper unit and the mastodon and edentate material came from the middle unit.’
    • ‘For example, a thoroughbred is a type of a horse, which is an equid, which is a mammal and so on.’
    • ‘Notably, in the three mammalian groups, equids, murids, and peromyscids, in which placental development of interspecific hybrids was analyzed to date, placentation defects were observed.’
    • ‘The orbital region is important because it has been demonstrated as useful in classifying different species of equids.’
    • ‘Hippidion was so distinctly different from other horses that it was considered to have diverged from the equid lineage about 10 million years ago.’
    • ‘The vertical lines represent the actual time ranges of equid genera or clades.’



/ˈēkwid/ /ˈikwɪd/ /ˈekwid/ /ˈɛkwɪd/


Late 19th century from modern Latin Equidae (plural), from Latin equus ‘horse’.