FLUID
fluid, unstable
(adjective) subject to change; variable; “a fluid situation fraught with uncertainty”; “everything was unstable following the coup”
fluid, mobile
(adjective) affording change (especially in social status); “Britain is not a truly fluid society”; “upwardly mobile”
fluid, liquid
(adjective) in cash or easily convertible to cash; “liquid (or fluid) assets”
fluent, fluid, liquid, smooth
(adjective) smooth and unconstrained in movement; “a long, smooth stride”; “the fluid motion of a cat”; “the liquid grace of a ballerina”
fluid, runny
(adjective) characteristic of a fluid; capable of flowing and easily changing shape
fluid
(noun) continuous amorphous matter that tends to flow and to conform to the outline of its container: a liquid or a gas
fluid
(noun) a substance that is fluid at room temperature and pressure
Source: WordNet® 3.1
Etymology
Noun
fluid (countable and uncountable, plural fluids)
Any substance which can flow with relative ease, tends to assume the shape of its container, and obeys Bernoulli's principle; a liquid, gas or plasma.
A liquid (as opposed to a solid or gas).
(specifically, medicine, colloquial, typically in the plural) Intravenous fluids.
Adjective
fluid (comparative more fluid, superlative most fluid)
(not comparable) Of or relating to fluid.
In a state of flux; subject to change.
Moving smoothly, or giving the impression of a liquid in motion.
(of an asset) Convertible into cash.
(rare) Genderfluid.
Synonyms
• (of or relating to fluid): fluidical, liquid; see also fluidic
• (subject to change): unstable, variable; see also changeable
• (moving smoothly): fluent, fluxive; see also flowing or runny
Source: Wiktionary
Flu"id, a. Etym: [L. fluidus, fr. fluere to flow: cf. F. fluide. See
Fluent.]
Definition: Having particles which easily move and change their relative
position without a separation of the mass, and which easily yield to
pressure; capable of flowing; liquid or gaseous.
Flu"id, n.
Definition: A fluid substance; a body whose particles move easily among
themselves.
Note: Fluid is a generic term, including liquids and gases as
species. Water, air, and steam are fluids. By analogy, the term is
sometimes applied to electricity and magnetism, as in phrases
electric fluid, magnetic fluid, though not strictly appropriate.
Fluid dram, or Fluid drachm, a measure of capacity equal to one
eighth of a fluid ounce.
– Fluid ounce. (a) In the United States, a measure of capacity, in
apothecaries' or wine measure, equal to one sixteenth of a pint or
29.57 cubic centimeters. This, for water, is about 1.04158 ounces
avoirdupois, or 455.6 grains. (b) In England, a measure of capacity
equal to the twentieth part of an imperial pint. For water, this is
the weight of the avoirdupois ounce, or 437.5 grains.
– Fluids of the body. (Physiol.) The circulating blood and lymph,
the chyle, the gastric, pancreatic, and intestinal juices, the
saliva, bile, urine, aqueous humor, and muscle serum are the more
important fluids of the body. The tissues themselves contain a large
amount of combined water, so much, that an entire human body dried in
vacuo with a very moderate degree of heat gives about 66 per cent of
water.
– Burning fluid, Elastic fluid, Electric fluid, Magnetic fluid,
etc. See under Burning, Elastic, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition