18-letter words starting with ir
- iridescent seaweed — a red alga, Irideae cordata, found on the Pacific coast of North America, having broad, leathery, iridescent blades.
- iron (ii) sulphate — an iron salt with a saline taste, usually obtained as greenish crystals of the heptahydrate, which are converted to the white monohydrate above 100°C: used in inks, tanning, water purification, and in the treatment of anaemia. Formula: FeSO4
- irreconcilableness — The quality of being irreconcilable; irreconcilability; incompatibility; incongruity.
- irregular variable — a variable star whose brightness variation is irregular.
- irreproachableness — The quality or state of being irreproachable; integrity; innocence.
- irresponsibilities — said, done, or characterized by a lack of a sense of responsibility: His refusal to work shows him to be completely irresponsible.
On this page, we collect all 18-letter words starting with IR. It’s easy to find right word with a certain length. It is the easiest way to find 18-letter word that beginning with IR to use in Scrabble or Crossword puzzles.