echelette

noun

eche·​lette

¦eshə¦let,

¦āsh-

plural -s

: a reflection grating made by ruling parallel V-shaped grooves in a polished metal plate so that light is reflected from the corresponding faces of successive grooves

Word History

Etymology

French échelette small rack, from Middle French eschelette small ladder, from eschele, eschiele ladder + -ette

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!