There is a weather app called アメッシュ. I get that the first part of the word is 雨「あめ」, but what's the meaning of the suffix 〜ッシュ?
アメッシュ (a registered trademark Tokyo Metropolitan Government), refers to the system which tells us how much rainfall is observed at each location in the metropolitan area.
The data is given in the form of grid, or mesh, consisting of 150m*150m squares (cf. Tokyo Amesh/About Tokyo Amesh) . Apparently this is where -ッシュ comes from.
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