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8-Letter Words Starting O & Ending UM

There are 11 8 letter words, 1 8 letter phrase and 0 8 letter abbr's starting with 'O' and ending with 'UM'.

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oncidium8
13 nounn
noun

• any orchid of the genus Oncidium: characterized by slender branching sprays of small yellow and brown flowers; often grown as houseplants

olibanum8
12 nounn
noun

• an aromatic gum resin obtained from various Arabian or East African trees; formerly valued for worship and for embalming and fumigation

origanum8
11 nounn
noun

• any of various fragrant aromatic herbs of the genus Origanum used as seasonings

oogonium8
11
noun

• An immature ovarian egg within a developing fetus

• A sac (the female gametangium) containing oospheres in algae or fungi.

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