Is “Ostia” a Scrabble word?
Yes
OSTIA
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Ostia
noun
1.A small opening or orifice, as in a body organ or passage.
2.Any of the small openings or pores in a sponge.
3.The mouth of a river.