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Definitions and Synonyms of fluid | Another word for fluid | What is fluid?

Definition 1: continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas - [noun denoting substance]

(fluid is a kind of ...) that which has mass and occupies space

"physicists study both the nature of matter and the forces which govern it"

(... is a kind of fluid ) a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely

(... is a kind of fluid ) fluid matter having no fixed shape but a fixed volume

Definition 2: a substance that is fluid at room temperature and pressure - [noun denoting substance]

(fluid is a kind of ...) the real physical matter of which a person or thing consists

"DNA is the substance of our genes"

(... is a kind of fluid ) a fluid agent (gas or liquid) that produces cooling; especially one used to cool a system by transferring heat away from one part to another

"he added more coolant to the car's radiator" "the atomic reactor used a gas coolant" "lathe operators use an emulsion of oil and water as a coolant for the cutting tool"

(... is a kind of fluid ) the product of filtration; a gas or liquid that has been passed through a filter

(... is a kind of fluid ) (Greek mythology) the rarified fluid said to flow in the veins of the Gods

(... is a kind of fluid ) a substance that is liquid at room temperature and pressure

Definition 3: subject to change; variable - [adjective satellite denoting all]

Samples where fluid or its synonyms are used according to this definition

  • a fluid situation fraught with uncertainty
  • everything was unstable following the coup

Synonyms for fluid in the sense of this definition

(fluid is similar to ...) such that alteration is possible; having a marked tendency to change

"changeable behavior" "changeable moods" "changeable prices"

Definition 4: in cash or easily convertible to cash - [adjective satellite denoting all]

Samples where fluid or its synonyms are used according to this definition

  • liquid (or fluid) assets

Synonyms for fluid in the sense of this definition

(fluid is similar to ...) free or available for use or disposition

"every disposable piece of equipment was sent to the fire" "disposable assets"

Definition 5: smooth and unconstrained in movement - [adjective satellite denoting all]

Samples where fluid or its synonyms are used according to this definition

  • a long, smooth stride
  • the fluid motion of a cat
  • the liquid grace of a ballerina

Synonyms for fluid in the sense of this definition

(fluid is similar to ...) characterized by beauty of movement, style, form, or execution

Definition 6: characteristic of a fluid; capable of flowing and easily changing shape - [adjective satellite denoting all]

Synonyms for fluid in the sense of this definition

(fluid is similar to ...) existing as or having characteristics of a liquid; especially tending to flow

"water and milk and blood are liquid substances"

Definition 7: affording change (especially in social status) - [adjective satellite denoting all]

Samples where fluid or its synonyms are used according to this definition

  • Britain is not a truly fluid society
  • upwardly mobile

Synonyms for fluid in the sense of this definition

(fluid is similar to ...) such that alteration is possible; having a marked tendency to change

"changeable behavior" "changeable moods" "changeable prices"

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