This was likely miscopied, as the assortment of letters suggests environmental, which has one less M and three Ns.
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Those letters will spell heating.
The letters 'isrdefn' unscrambled can spell the following words:FindersFriends
The letters 'talinger' can be unscrambled to spell the following words:AlertingAlteringIntegralRelatingTriangle
The letters 'sheccer' unscrambled spell the word screech.
The letters 'tinoreiicppat' unscrambled spell the word precipitation.