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| ob- |
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prefix
- Against; facing; a combining prefix used with verbs of Latin origin.
- (botany) Of a reversed shape.
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| oct- |
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prefix - Form of octa- or octo- used before a vowel.
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| octa- |
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prefix or before a vowel oct-
- eight
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| octo- |
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prefix or before a vowel oct-
- eight
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| Of- |
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prefix
- a regulatory body for a specified industry
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| oligo- |
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prefix
- few
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| omni- |
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prefix
- a combining form meaning "all", used in the formation of compound words.
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| oo- |
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prefix
- Combining prefix indicating egg, ovum.
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| opto- |
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prefix
- eye, vision, light
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| ortho- |
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prefix - straight, right, proper
- (chemistry) Having an extra proportion of water
- (chemistry) in isomeric benzene derivatives, having the two substituents in adjacent positions (compare meta- and para-)
- (physics) of any molecule of the form X2 in which the two nuclei have parallel spin
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| osteo- |
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prefix
- bone
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| out- |
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prefix (infl, en, prefix, cat=prefixes)
- External to
- outback
- outhouse
- Surpassing, exceeding
- outdo
- outlast
- Greater than, beyond
- outsize
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| over- |
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prefix
- above, or higher
- superior
- excessively
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| oxy- |
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prefix - Concerning oxygen
- Sharp, keen, acute, pungent, acid
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