Try Our Apps
(in a hydraulic system) the part of a head of water or of another liquid that represents the energy that the system dissipates through friction with the sides of conduits or channels and through heating from turbulent flow.
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Discover our greatest slideshows
Words Built For Speed
Hasta la Vista! 8 Goodbyes Worth...
14 Thought-Provoking Quotes About...
Should I use ALL-CAPS?
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
Nearby words for friction head