Definition of Protura
: a group of very minute primitive wingless blind arthropods that lack antennae, have the mouth parts concealed within the head, undergo no noticeable metamorphosis except an increase in the number of abdominal segments, and are sometimes considered to form an order of Insecta or more often in current classification treated as a distinct class
proturan\-rən\ adjective or noun
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Origin and Etymology of protura
New Latin, from prot- + -ura
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