Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: the algebraic sum of all the forces tending to cause water to move into a plant cell
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:
Share diffusion pressure deficit
Resources for diffusion pressure deficit
diffusion pressure deficit
Comments on diffusion pressure deficit
What made you want to look up diffusion pressure deficit? Please tell us where you read or heard it (including the quote, if possible).
amusing and light sparring with words
Get Word of the Day daily email!
Late Autumn 2018 Words of the Day Quiz
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
We hold back nothing in this article.
Words from the week of 12/7/2018
What is 'snuff' and how high up is it?
Watch as we go rogue.
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
More word puzzles to rack your brain
A game of winding words.