WordReference Random House Unabridged Dictionary of American English © 2020
mar•i•graph  (mari graf′, -gräf′),USA pronunciation n. 
  1. a device that automatically registers the rise and fall of the tide.
Also,  mareograph.  mar•i•graph•ic  (mari graf′, -gräf′),USA pronunciation adj. 
  • Latin mari- (combining form of mare sea) + -graph
  • 1855–60;

'marigraph' also found in these entries:
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