methylene iodide

noun

: a yellowish liquid compound CH₂I₂ remarkable for its high specific gravity (3.325 at 20° C) and high index of refraction that make it useful in separating minerals and determining specific gravities and indexes of refraction

called also diiodomethane

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!