alveolar theory

noun

Definition of alveolar theory

: a now discarded cytological theory that held protoplasm to be essentially an emulsion in which the apparent ground substance is the discontinuous phase

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 alveolar theory

1891, in the meaning defined above

Learn More About alveolar theory

Time Traveler for alveolar theory

Time Traveler

The first known use of alveolar theory was in 1891

See more words from the same year

Dictionary Entries Near alveolar theory

alveolar surface

alveolar theory

alveolary

See More Nearby Entries 

Statistics for alveolar theory

Cite this Entry

“Alveolar theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alveolar%20theory. Accessed 1 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Flower Edition

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

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!