21-letter words starting with is
- isolation transformer — An isolation transformer is a transformer with physically separate primary and secondary windings, that prevent it from transferring unwanted noise from the input circuit to the output windings.
- isopropylideneacetone — mesityl oxide.
On this page, we collect all 21-letter words starting with IS. It’s easy to find right word with a certain length. It is the easiest way to find 21-letter word that beginning with IS to use in Scrabble or Crossword puzzles.