hyperacid
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hy·per·ac·id
(hī′pər-ăs′ĭd)adj.
Containing excessive acid; excessively acidic: a hyperacid stomach.
hy′per·a·cid′i·ty (-ə-sĭd′ĭ-tē) n.
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.