Octopuses are fascinating marine creatures.

This is my eight hundredth cup of coffee today.

The nineteenth-century artworks are exhibited in the museum.

Il mio ottocentesimo compleanno \/ My eight hundredth birthday

The eight hundredth of the cake was divided into two equal parts.

I paid eight hundredths for the ice cream.

I paid eight hundredths for this ancient book.

The Ottoman Empire was an important empire in the 15th and 16th centuries.

The Ottoman furnishings in the conference room were truly splendid.

This armchair is ottoman.