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WordReference Random House Unabridged Dictionary of American English © 2024sus•ten•ta•tion (sus′tən tā′shən),USA pronunciation n. - maintenance in being or activity; the sustaining of life through vital processes.
- provision with means or funds for upkeep.
- means of sustaining life;
sustenance.
- Latin sustentātiōn- (stem of sustentātiō) an upholding, equivalent. to sustentāt(us) (past participle of sustentāre, frequentative of sustinēre to sustain) + -iōn- -ion
- Middle English 1350–1400
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