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deuterostome

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noun deu·tero·stome \ˈdü-tə-rō-ˌstōm also ˈdyü-\

Definition of deuterostome

  1. :  any of a major division (Deuterostomia) of the animal kingdom that includes the bilaterally symmetrical animals (as the chordates) with indeterminate cleavage and a mouth that does not arise from the blastopore



Origin and Etymology of deuterostome

New Latin Deuterostomia, group name, from deuter- + Greek stoma mouth — more at stomach


First Known Use: 1950


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