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Webster 1913 Edition

Adj.

[It.

sistino

Of or pertaining to Pope Sixtus.

Sistine chapel

a chapel in the Vatican at Rome, built by Pope Sixtus IV., and decorated with frescoes by Michael Angelo and others.

Sistine ‎(not comparable)

Of or pertaining to Pope Sixtus.
The Sistine chapel was built by Pope Sixtus IV.