1. (in the former Soviet Union) a region or province

Derived forms: oblasts

Encyclopedia: Oblast

• Ostreidae
• ostrich
• ostrich fern
• Ostrogoth
• Ostrya
• Ostrya carpinifolia
• Ostrya virginiana
• Ostryopsis
• Ostwald
• Ostwald's theory of indicators
• Ostyak
• Ostyak-Samoyed
• Oswald
• Oswald Spengler
• Oswald Veblen
• oswego tea
• Otaheite arrowroot
• Otaheite arrowroot starch
• otalgia
• Otaria
• Otaria Byronia
• Otariidae
• otc
• OTC market
• OTC security