sus·ten·ta·tion
(sŭs′tən-tā′shən, -tĕn-)n.1. Sustenance or maintenance, as with money.
2. Something that sustains; a support.
[Middle English, from Old French, from Latin sustentātiō, sustentātiōn-, from sustentātus, past participle of sustentāre, to support; see sustentacular.]
sus′ten·ta′tive (-tā′tĭv) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
sustentative
(ˈsʌstɛnˌteɪtɪv) adj1. (Physiology) physiol relating to sustentation
2. sustaining
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014