bulk density


Definition of bulk density

: the density of a given amount of particulate matter (such as a powder) Industry experts say the feather fiber resists wet collapse and has a greater bulk density than conventional wood pulp fiber.Baltimore Sun, 30 Jan. 1996

Note: The bulk density of a substance is determined by dividing the total mass of the substance by the volume that it occupies. Since the mass is in the form of a number of discrete particles, this value can vary depending on how the particles are arranged and therefore is not necessarily dependent on the physical properties of the material.

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 bulk density

1940, in the meaning defined above

Keep scrolling for more

Learn More about bulk density

Time Traveler for bulk density

Time Traveler

The first known use of bulk density was in 1940

See more words from the same year

Statistics for bulk density

Cite this Entry

“Bulk density.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bulk%20density. Accessed 27 Oct. 2020.

Comments on bulk density

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


Test Your Vocabulary

Namesakes Word Quiz

  • a citrus fruit possibly named after a person
  • Which of the following is a fruit named after a Moroccan seaport?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

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!