- a substance, as a liquid or gas, that is capable of flowing and that changes its shape at a steady rate when acted upon by a force tending to change its shape.
- pertaining to a substance that easily changes its shape; capable of flowing.
- consisting of or pertaining to fluids.
- changing readily; shifting; not fixed, stable, or rigid: fluid movements.
- convertible into cash: fluid assets.
Origin of fluid
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for fluid
So we know that boring down to the bedrock and pumping it full of fluid can cause earthquakes.26 Earthquakes Later, Fracking’s Smoking Gun Is in Texas
January 7, 2015
In other words, the omnipresent postcolonial Arab State has just about dropped dead, the times are fluid and the vacuums are many.ISIS and BS
October 15, 2014
Underneath minimalistic names like Detox and Cleanse, enticing descriptions of the fluid medicine bags help narrow the choices.The I.V. Doc Comes to Your House, Fights Hangovers, and Wins
July 20, 2014
Kids are less likely to drink appropriate amounts of fluid in preparation of and participation in physical activity.A Lesson From LeBron James’ Game One Nightmare
Dr. Anand Veeravagu, MD, Tej Azad
June 7, 2014
Yet he is a skilled communicator, and politics is a fluid environment, so anything is possible.Joe Scarborough: ‘No Plans’ to Run for President
March 17, 2014
A fluid that serves the gods and goddesses in place of blood.The Devil's Dictionary
In truth, his learnings and achievements are fluid and moving.The Child and the Curriculum
Once fairly hit by this fluid, I imagine most animals will drop the skunk.
I moistened my finger on my tongue, lifted the fluid from my cheek, and tasted it.
Every fluid of the body is salty, and every cell of the body is bathed in salt water.
- a substance, such as a liquid or gas, that can flow, has no fixed shape, and offers little resistance to an external stress
- capable of flowing and easily changing shape
- of, concerned with, or using a fluid or fluids
- constantly changing or apt to change
- smooth in shape or movement; flowing
Word Origin and History for fluid
early 15c., from Middle French fluide (14c.) and directly from Latin fluidus "fluid, flowing, moist," from fluere "to flow" (see fluent). Figurative use from 1640s. Related: Fluidly.
1660s, from fluid (adj.).
- An amorphous substance whose molecules move freely past one another; a liquid or gas.
- Of or characteristic of a fluid.