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How to pronounce fluid (audio)
The Complete Vocabulary Builder Workbook

Dictionary definition of fluid

A substance that has the ability to flow and take the shape of its container.
"The mechanic checked the car's brake fluid to ensure it was at the correct level."

Detailed meaning of fluid

It is a state of matter that includes liquids and gases. Fluids possess properties of viscosity, density, and pressure, which determine their behavior and characteristics. Liquids, such as water, oil, or blood, are examples of fluids that have a definite volume but no fixed shape. They can flow and adapt to the shape of the container they are placed in. Gases, like air or steam, also fall under the category of fluids. They have neither a fixed shape nor a fixed volume and can expand to fill any available space. The study of fluids and their properties is essential in various scientific fields, including physics, chemistry, and engineering. Understanding how fluids behave and interact with their surroundings is crucial in fields such as fluid dynamics, hydrodynamics, and fluid mechanics.

Example sentences containing fluid

1. She drank a glass of refreshing cold fluid after her workout.
2. The mechanic checked the levels of various fluids in the car's engine.
3. The dancer moved with grace and fluidity across the stage.
4. The doctor recommended increasing fluid intake to stay hydrated.
5. The artist captured the movement of the river with fluid brushstrokes.
6. The swimmer's strokes were smooth and fluid, gliding through the water effortlessly.

History and etymology of fluid

The noun 'fluid' is derived from the Latin word 'fluidus,' which means 'flowing' or 'liquid.' 'Fluidus' is related to the Latin verb 'fluere,' which means 'to flow.' In Latin, 'fluidus' described anything that had the characteristic of flowing, whether it be a liquid, a gas, or even the flowing motion of something like a river. This Latin root captures the essence of a substance that can move and take the shape of its container, which is the defining feature of fluids. Over time, as the term 'fluid' was adopted into English, it retained its connection to substances that flow and adapt to their containers. The etymology of 'fluid' underscores its historical association with the property of flowability and adaptability, making it a suitable term for describing substances like liquids and gases that exhibit these characteristics.

Quiz: Find the meaning of fluid

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Further usage examples of fluid

1. The liquid soap formed a fluid lather in her hands.
2. The engineer designed a system to regulate the flow of fluids in the pipeline.
3. The fluidity of her speech made her an engaging public speaker.
4. The toddler's movements were unsteady at first but gradually became more fluid.
5. The patient needed a transfusion to replenish the lost fluids.
6. The dancer's body moved with fluid precision, captivating the audience.
7. The artist experimented with various fluid mediums to create abstract paintings.
8. The mechanic checked for leaks in the fluid lines of the brake system.
9. The yogi guided her students through a series of fluid poses.
10. The fluid motion of the dancer mesmerized the crowd.
11. The doctor explained that the joint pain could be due to reduced synovial fluid.
12. The engineer developed a system to control the flow of fluids in the industrial process.
13. The artist used a combination of watercolors and acrylics to create a fluid composition.
14. The athlete drank a sports drink to replenish the fluids lost during the intense workout.

liquid, solid, rigid, inflexible

TOEFL 9, High School 8, Middle School 7, Materials and Substances




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