Countable Nouns Starting with OR and Containing UM

Browse 7 valid English countable nouns starting with OR and containing UM, from Organum, Origanum, Ornithogalum, Orarium, Organistrum, Orontium and Ordalium to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with ORA
1 words
orarium
Starts with ORD
1 words
ordalium
Starts with ORG
2 words
organum
organistrum
Starts with ORI
1 words
origanum
Starts with ORN
1 words
ornithogalum
Starts with ORO
1 words
orontium

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