“hypoiodous”

We have one entry that includes the term hypoiodous.

hypoiodous acid

noun

: a very unstable very weak acid HIO that resembles hypochlorous acid and is obtained in solution by treating mercury oxide (see mercury oxide sense b) with iodine in water or in the form of unstable salts in solution by reaction of iodine with alkali

See the full definition

Word of the Day

Listen to the pronunciation of perpetuity

See Definitions and Examples »

Test Your Vocabulary

Words Named After People Quiz

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.

Pick the best words!

PLAY
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
high school student holding a pencil leaning over a sat test
Challenging Standardized Test Words 20 questions to help you score 1600
See All