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Quadratus is Latin for square. Quadratus was also a cognomen from the Roman Republic and Roman Empire. It may refer to:

People

• Lucius Ninnius Quadratus, a tribune of the plebs in 58 BC and a warm friend to Roman Senator Marcus Tullius Cicero
• Gaius Volusenus Quadratus, a military officer of the late Roman Republic in 40s BC
• Fannius Quadratus, a Roman poet and a contemporary of Horace
• Gaius Antius Aulus Julius Quadratus, an ordinary consul serving in 105
• Quadratus of Athens, the Christian writer and saint
• Quadratus (martyr), the name of several saints and martyrs
• Lucius Statius Quadratus, an ordinary consul serving in 142
• Gaius Julius Quadratus Bassus, Legate at Judaea between 102 and 105, Consul of Rome in 105 and Proconsul of Asia in 105, grandfather of:
• Gaius Asinius Quadratus, the Roman historian, father of:
• Gaius Asinius Protimus Quadratus (died 235), Proconsul of Achaea in 220
• Any of various members of the Roman gens Ummidia

Anatomy

In anatomy, quadratus refers to a quadrilateral (square or rectangular) shape. Structures with quadratus in their name are:

• Lobus quadratus, the quadrate lobe of liver
• Pronator quadratus muscle, in the forearm
• Quadratus femoris muscle, in the posterior hip
• Quadratus lumborum muscle, in the back
• Quadratus plantae muscle, in the foot

See also

• Quadriceps
• The 2nd colossus from the video game Shadow of the Colossus
• Araneus quadratus, a species of spider

• Disambiguation pages