exoskeleton

CEFR: C1-C2 /ex-oskele-ton/ [eh2.k.s.ow0.s.k.eh1.l.ah0.t.ah0.n]

Definition: A rigid external covering for the body in some invertebrate animals, especially arthropods

Example Sentences:

Lobsters, like all animals with exoskeletons, periodically shed their armor as they grow.