What does Septizōnium mean in Latin?

Septizōnium, a noun, means “a large building in Rome.; place in the sky with seven zones.”.

noun · neuter

Septizōnium

Septizōnium n

Septizōnĭum (Septemzōdĭum), ii, n. septem-zona.

I. A large building in Rome in the twelfth region, prob. seven stories in height, Suet. Tit. 2 init.—

II. A monument of the emperor Septimius Severus, in the tenth region, Spart. Sev. 19; 35.—

III. A building of M. Aurelius Antoninus, Amm. 15, 7, 3 (others consider II. and III. to have been the same building).—

IV. The seven planets, Commod. 7 and 19.