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ultisol
ultra
ultra-
ultra-heat-treated
ultra vires
ultrabasic
ultracentrifuge
ultrafiche
ultrafilter
ultrafiltrate
ultrafiltration
ultrahigh frequency
ultraism
ultralarge crude carrier
ultralight
ultramafic
ultramarine
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ultrafilter
ul·tra·fil·ter [ ùltrə fíltər ] (plural ul·tra·fil·ters)


noun 
Definition:
 
filter for very small particles: a filter for separating extremely small particles from a solution or colloid
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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