viscosity

play
noun vis·cos·i·ty \vi-ˈskä-sə-tē\

Definition of viscosity

plural

viscosities

  1. 1 :  the quality or state of being viscous :  a sticky or glutinous consistency

  2. 2a technical :  the property of resistance to flow in any material with fluid properties … water has a small but measurable viscosity, or “stickiness,” which results from the weak mutual attraction of water molecules. — Hans Christian von Baeyerb :  the mathematical ratio of the tangential frictional force per unit area to the velocity gradient perpendicular to the direction of flow of a liquid —called also coefficient of viscosity

Examples of viscosity in a sentence

  1. conducted an experiment to determine the viscosity of motor oil

Origin and Etymology of viscosity

Middle English viscosite, from Anglo-French viscosité, from Medieval Latin viscositat-, viscositas, from Late Latin viscosus viscous


First Known Use: 14th century

Other Chemical Engineering Terms


Medical Dictionary

viscosity

play
noun vis·cos·i·ty \vis-ˈkäs-ət-ē\

Medical Definition of viscosity

plural

viscosities

  1. 1:  the quality of being viscous; especially :  the property of resistance to flow in a fluid or semifluid

  2. 2:  the ratio of the tangential frictional force per unit area to the velocity gradient perpendicular to the direction of flow of a liquid—called also coefficient of viscosity



Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

capable of being altered or controlled

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • peter-bruegel-tower-of-babel-painting
  • What language does pajama come from?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!