We found 23 dictionaries that define the word ostia:

General (14 matching dictionaries)

1. Ostia, ostia: Merriam-Webster
2. Ostia, ostia: Oxford Learner's Dictionaries
3. Ostia, ostia: American Heritage Dictionary of the English Language
4. Ostia: Collins English Dictionary
5. Ostia, ostia: Wordnik
6. Ostia, ostia: Wiktionary
7. Ostia: Webster's New World College Dictionary, 4th Ed.
8. Ostia: Infoplease Dictionary
9. Ostia, ostia: Dictionary.com
10. Ostia(Sponges), Ostia (Rome), Ostia (disambiguation), Ostia (district), Ostia (film), Ostia (quarter of Rome), Ostia (town), Ostia: Wikipedia, the Free Encyclopedia
11. Ostia: Online Plain Text English Dictionary
12. Ostia: AllWords.com Multi-Lingual Dictionary
13. ostia: FreeDictionary.org
14. Ostia: TheFreeDictionary.com

Art (1 matching dictionary)

15. Ostia: Global Glossary

Business (1 matching dictionary)

16. ostia: Legal dictionary

Computing (1 matching dictionary)

17. Ostia (disambiguation), Ostia: Encyclopedia

Medicine (4 matching dictionaries)

18. ostia: Merriam-Webster Medical Dictionary
19. online medical dictionary (No longer online)
20. Ostia (disambiguation), ostia: Medical dictionary
21. PERFUSION TECHNOLOGY, OPEN HEART SURGERY AND CARDIOLOGY (No longer online)

Science (1 matching dictionary)

22. Archaeology Wordsmith (No longer online)

Slang (1 matching dictionary)

23. ostia: Urban Dictionary

(Note: See ostium as well.)

Definitions from Wiktionary (Ostia) ▸ noun:  (historical) A port and town on the Tiber in Italia, Roman Empire, the harbour of ancient Rome ▸ noun:  A modern refounding of the ancient town at the mouth of the Tiber, now a neighbourhood of Rome, Italy Similar: Ostia Antica, Rome, Tiber, Civitavecchia, Orvieto, Stabiae, Tivoli, Ossonoba, Trastevere, Latina, more... Opposite: stoma, aperture, opening, orifice Types: foramen ovale, foramen spinosum, foramen lacerum, incisurangularis, more... Phrases: Ostia Antica, ostia (disambiguation), Battle of Ostia, more... Adjectives: coronary, tubal, accessory, sinus, natural, lateral, right, abdominal, renal, separate, ancient Colors:     ochre,     rust,     sienna,     burnt orange,     clay, more... ▸ Words similar to ostia ▸ Usage examples for ostia ▸ Idioms related to ostia ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ostia ▸ Words that often appear near ostia ▸ Rhymes of ostia ▸ Invented words related to ostia