fluid

/ˈfluːɪd/
adjectivenounIntermediate
formal

A substance that flows and easily changes shape, such as liquids and gases.

Water is a fluid that adapts to the shape of its container.

The fluid in the pipe moved smoothly under pressure.

💡

In physics, fluids include both liquids and gases, as they can flow and take the shape of their container.

informal

Flexible or adaptable in nature, not rigid or fixed.

The project plan needs to be more fluid to accommodate changes.

Her schedule is fluid, allowing her to adjust as needed.

💡

This figurative use emphasizes adaptability and lack of rigidity.

Collocations

fluid dynamicsThe study of how fluids move and interact with forces.fluid intelligenceThe ability to reason and solve novel problems.fluid situationA situation that is changing or uncertain.

Synonyms

Antonyms

Related Phrases

fluid dynamicsphrase
The branch of physics concerned with the motion of fluids.
fluid intelligencephrase
The capacity to think logically and solve problems in new situations.

💡Pro Tip

Scientific vs. Figurative Use

Be mindful of the context when using 'fluid'. In science, it refers to liquids and gases, while in general language, it describes adaptability.

Gold Rule

Precision in Context

Use 'fluid' accurately—avoid applying the figurative sense in technical writing unless explicitly discussing adaptability.

📖Word Origin

From Latin 'fluidus', meaning 'flowing', from 'fluere' (to flow).

📝Usage Notes

In scientific contexts, 'fluid' refers to liquids and gases. In everyday language, it can describe adaptability or flexibility.

Word Breakdown

flu
flow
root
+
-id
having the quality of
suffix
English Dictionary