fluid

Noun
  1. A substance that is fluid at room temperature and pressure (synset 114964038)
    is a type of: substance - the real physical matter of which a person or thing consists
    subtypes:
    • coolant - 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
    • filtrate - the product of filtration; a gas or liquid that has been passed through a filter
    • ichor - (Greek mythology) the rarified fluid said to flow in the veins of the Gods
    • liquid - a substance that is liquid at room temperature and pressure
  2. Continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas (synset 114963583)
    is a type of: matter - that which has mass and occupies space
    subtypes:
    • gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
    • liquid - fluid matter having no fixed shape but a fixed volume
Adjective
  1. Subject to change;
    Variable (synset 300346411)
    "a fluid situation fraught with uncertainty"; "everything was unstable following the coup"
    similar to: changeable, changeful - such that alteration is possible; having a marked tendency to change
    same as: unstable
  2. Characteristic of a fluid;
    Capable of flowing and easily changing shape (synset 302269502)
    similar to: liquid - existing as or having characteristics of a liquid; especially tending to flow
    same as: runny
  3. Smooth and unconstrained in movement (synset 301143332)
    "a long, smooth stride"; "the fluid motion of a cat"; "the liquid grace of a ballerina"
    similar to: graceful - characterized by beauty of movement, style, form, or execution
    same as: fluent, liquid, smooth
  4. In cash or easily convertible to cash (synset 300781576)
    "liquid (or fluid) assets"
    similar to: disposable - free or available for use or disposition
    same as: liquid
  5. Affording change (especially in social status) (synset 300346611)
    "Britain is not a truly fluid society"; "upwardly mobile"
    similar to: changeable, changeful - such that alteration is possible; having a marked tendency to change
    same as: mobile

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