mean higher high water
Also found in: Acronyms.
mean higher high water
[′mēn ¦hī·ər ′hī ′wȯd·ər] (oceanography)
The average height of higher high waters at a place over a 19-year period.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.