Definition of clade in English:

clade

noun

Biology
  • A group of organisms believed to comprise all the evolutionary descendants of a common ancestor.

    ‘the great ape and human clade’
    • ‘Species in the two primary clades in the genus tend to be found in different parts of North America.’
    • ‘The monilophytes refers to the monophyletic clade of horsetails and ferns.’
    • ‘The same mode of increase has been adopted independently in phylogenetically distinct clades.’
    • ‘Fossils are often not ancestors of extant taxa, but instead may be extinct sister groups to modern taxa or clades.’
    • ‘Was survival of the various clades through various biotic crises just a matter of luck?’

Origin

1950s: from Greek klados ‘branch’.

Pronunciation

clade

/kleɪd/