Definition of deuterostome
: 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 of deuterostome
New Latin Deuterostomia, group name, from deuter- + Greek stoma mouth — more at stomach
First Known Use: 1950
Learn More about deuterostome
Britannica.com: Encyclopedia article about "deuterostome"
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