hy·​dro·​dy·​nam·​ic | \ ˌhī-drō-dī-ˈna-mik How to pronounce hydrodynamic (audio) \
variants: or less commonly hydrodynamical \ ˌhī-​drō-​dī-​ˈna-​mi-​kəl How to pronounce hydrodynamical (audio) \

Definition of hydrodynamic

: of, relating to, or involving principles of hydrodynamics

Keep scrolling for more

Other Words from hydrodynamic

hydrodynamically \ ˌhī-​drō-​dī-​ˈna-​mi-​k(ə-​)lē How to pronounce hydrodynamically (audio) \ adverb

Did You Know?

Bernoulli's principle, which is basic to the science of hydrodynamics, says that the faster a fluid substance flows, the less outward pressure it exerts. It shows the close relationship between hydrodynamics and aerodynamics (which deals with the movement of air and other gases), since it can partly explain how air will "lift" an airplane by the way it flows over the wings, and how a spoiler helps keep a race car's wheels pressed to the ground as it accelerates. Hydrodynamics is sometimes applied today in studying the surface of the planets and even the stars. As used informally by boaters, hydrodynamic often means "hydrodynamically efficient".

Examples of hydrodynamic in a Sentence

Recent Examples on the Web

The atmosphere of Pluto undergoes hydrodynamic escape, much the same way Earth's early, toxic atmosphere was stripped away. John Wenz, Popular Mechanics, "Here's What We Know About Pluto So Far," 17 July 2015 After finding these changes, the authors sought to model the magnetic and hydrodynamic effects the spacecraft observed. Eric Berger, Ars Technica, "Yes, Europa really is sending plumes of water into space," 14 May 2018 On one 8-year-old girl, the fabric hung as loosely as the skin of a Shar Pei, visibly negating any explicit hydrodynamic benefits of the advanced technology that went into the design of the suits. New York Times, "Young Swimmers May Have to Wait to Dress Like Katie Ledecky," 11 May 2018 A hydrodynamic analysis of the humpback's movements in the lab confirmed that both the upstroke and the downstroke of its flippers provide forward thrust. Carrie Arnold, National Geographic, "Rare Video Captures Never-Before-Seen Whale Behavior," 12 July 2017 Sutton doesn't believe the wings have any hydrodynamic use, however. Kyle Mizokami, Popular Mechanics, "Russia's Gigantic New Submarine Has Enormous "Wings"," 23 May 2017 Think of the tiny, hydrodynamic scales which cover a shark’s body –- Brian Switek, WIRED, "Repost: Teeth, From the Outside In," 12 June 2012

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrodynamic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of hydrodynamic

circa 1828, in the meaning defined above

History and Etymology for hydrodynamic

New Latin hydrodynamicus, from hydr- + dynamicus dynamic

Keep scrolling for more

Learn More about hydrodynamic

Statistics for hydrodynamic

Look-up Popularity

Time Traveler for hydrodynamic

The first known use of hydrodynamic was circa 1828

See more words from the same year

Keep scrolling for more

More Definitions for hydrodynamic


hy·​dro·​dy·​nam·​ic | \ -dī-ˈnam-ik How to pronounce hydrodynamic (audio) \
variants: also hydrodynamical \ -​i-​kəl How to pronounce hydrodynamical (audio) \

Medical Definition of hydrodynamic

: of, relating to, or involving principles of hydrodynamics

More from Merriam-Webster on hydrodynamic

Rhyming Dictionary: Words that rhyme with hydrodynamic

Comments on hydrodynamic

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


to form ideas or theories about something

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!