A group of marine animals (like cephalopods and fish) that have circular muscle fibers arranged in rows around their bodies.
From cyclo- (circle) + Greek mys (muscle) + -aria (plural suffix). This zoological term was coined in the 19th century to classify organisms based on their distinctive muscular arrangement pattern.
Squid and octopuses are cyclomyarians, and their circular muscle rings let them jet-propel through water at incredible speeds—their muscle architecture is literally a hydrodynamic masterpiece.
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