mar·i·graph \-raf, -rȧf\noun ormar·e·o·graph\-rēə-\ Etymology:marigraph from mari- + -graph; mareograph from French maréographe, from maréo- (from Latin mare sea) + -graphe -graph — more at marine : a self-registering tide gage • mar·i·graph·ic\|marə|grafik\adjective