ace·​to-or·​ce·​in | \ ˌa-sə-tō-ˈȯr-sē-ən How to pronounce aceto-orcein (audio) , ə-ˌsē-tō- \

Definition of aceto-orcein

: a biological stain consisting of orcein in solution with acetic acid Root tips were obtained and stained with aceto-orcein, and root tip squashes were performed.— A. Lane Rayburn et al., Crop Science, 27 Oct. 2005

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!

First Known Use of aceto-orcein

1949, in the meaning defined above

History and Etymology for aceto-orcein

aceto- + orcein

Keep scrolling for more

Learn More about aceto-orcein

Time Traveler for aceto-orcein

Time Traveler

The first known use of aceto-orcein was in 1949

See more words from the same year

Statistics for aceto-orcein

Cite this Entry

“Aceto-orcein.” Dictionary, Merriam-Webster, Accessed 30 Oct. 2020.

Comments on aceto-orcein

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


Test Your Vocabulary

Here Be Dragons: A Creature Identification Quiz

  • monster werewolf photo
  • Which is a synonym of werewolf?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

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

Love words? Need even more definitions?

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