ortho-hydrogen

noun
\¦ȯ(r)thə+\

Definition of ortho-hydrogen 

: molecular hydrogen in which the two hydrogen nuclei are spinning in the same direction ordinary hydrogen gas comprises an equilibrium mixture of three parts of ortho-hydrogen (with parallel nuclear spin) to one part of para-hydrogen (with antiparallel nuclear spin)— Otto Reinmuth — compare para-hydrogen

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Learn More about ortho-hydrogen

Share ortho-hydrogen

Statistics for ortho-hydrogen

Look-up Popularity

Comments on ortho-hydrogen

What made you want to look up ortho-hydrogen? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a trusted follower

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

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