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ultrabasic
ultracentrifuge
ultrafiche
ultrafilter
ultrafiltrate
ultrafiltration
ultrahigh frequency
ultraism
ultralarge crude carrier
ultralight
ultramafic
ultramarine
ultramicrometer
ultramicroscope
ultramicroscopic
ultramodern
ultramontane
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ultimatum

ul·ti·ma·tum [ ùltə máytəm ] (plural ul·ti·ma·tums or ul·ti·ma·ta [ ùltə máytə ])


noun 
Definition:
 
final demand: a demand accompanied by a threat to inflict some penalty if the demand is not met

[Mid-18th century. < modern Latin< Latin ultimatus (see ultimate)]
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