Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

ethynyl

noun ethy·nyl

less common spelling of

  1. :  a monovalent unsaturated radical HC≡C− derived from acetylene by removal of one hydrogen atom

Read the Latest from M-W

alt-59552e99dd1ce
Trending: When Government Is Just the Worst
payday
How Often Is 'Biweekly'?
istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
June 2017 Words of the Day Quiz
image599301899
Pretty in 'Pink'

Medical Dictionary

ethynyl

ethy·nyl

Medical Definition of ethynyl

variant of ethinyl

Seen and Heard

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

show hide

Love words? Need even more definitions?

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

WORD OF THE DAY

culminate

play

to reach the highest or a decisive point

Get Word of the Day daily email!

TRENDING NOW

  1. kakistocracy Frustrated Twitter users have been searching for this word.

  2. bona fide Made in good faith

  3. surrogate mother From TMZ to the dictionary.

  4. zealot A fanatical partisan

  5. stonewall to be uncooperative, obstructive, or evasive

SEE ALL

BROWSE DICTIONARY

ethynyl

WORD GAMES

Take a 3-minute break and test your skills!

  • istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
  • Which is a synonym of garner?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

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!

Words at Play

alt-5953d7f904965
'Patriot' Hasn't Always Been Positive

The word has roots in a religious rivalry

alt-5949565fc7d94
'Negging' Moves Beyond The Bar

Not just for pick-up artists anymore

alt-5947fc40f1b5c
In Tech, What Does 'K' Mean?

A buzzword with a long history.

alt-5951697e1a410
When To Use 'Specious' vs. 'Spurious'

These similar words are not interchangeable

Ask the Editors

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?

Language changes

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
June 2017 Words of the Day Quiz

Summer's first WOTD quiz.

Take the quiz
alt-5941ad7527c3c
Yearbook Superlatives Quiz

Is that your picture under "Largest Vocabulary"?

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
Word Winder's CrossWinder
Word Winder's CrossWinder

A game of winding words.

Play the game