It is a line connecting all points at which there exists an equal vertical distance between the earth's surface and the water table.
ISOBATH
You most likely meant "isobath." A line depicting all points at a designated level under a mass of water.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern IS---T-. That is, seven letter words with 1st letter I and 2nd letter S and 6th letter T. In alphabetical order, they are: isobath isolate
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -S---TH. That is, seven letter words with 2nd letter S and 6th letter T and 7th letter H. In alphabetical order, they are: isobath
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern I----TH. That is, seven letter words with 1st letter I and 6th letter T and 7th letter H. In alphabetical order, they are: inearth insooth isobath
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern -S--AT-. That is, seven letter words with 2nd letter S and 5th letter A and 6th letter T. In alphabetical order, they are: isobath isolate osmiate ostiate
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -SO--T-. That is, seven letter words with 2nd letter S and 3rd letter O and 6th letter T. In alphabetical order, they are: isobath isolate
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern IS-B---. That is, seven letter words with 1st letter I and 2nd letter S and 4th letter B. In alphabetical order, they are: isabels isobare isobars isobase isobath
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 10 words with the pattern I---AT-. That is, seven letter words with 1st letter I and 5th letter A and 6th letter T. In alphabetical order, they are: imamate imitate implate inflate ingrate instate irisate isobath isolate iterate
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --O-ATH. That is, seven letter words with 3rd letter O and 5th letter A and 6th letter T and 7th letter H. In alphabetical order, they are: isobath
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -S-BAT-. That is, seven letter words with 2nd letter S and 4th letter B and 5th letter A and 6th letter T. In alphabetical order, they are: isobath
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern IS-B--H. That is, seven letter words with 1st letter I and 2nd letter S and 4th letter B and 7th letter H. In alphabetical order, they are: isobath