Definify.com

Webster 1913 Edition


Fluid

Flu′id

(flū′ĭd)
,
Adj.
[L.
fluidus
, fr.
fluere
to flow: cf. F.
fluide
. See
Fluent
.]
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

,
Noun.
A fluid substance; a body whose particles move easily among themselves.
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.

Webster 1828 Edition


Fluid

FLU'ID

,
Adj.
[L. fluidus, from fluo, to flow.] Having parts which easily move and change their relative position without separation, and which easily yield to pressure; that may flow; liquid. Water, spirit, air, are fluid substances. All bodies may be rendered fluid by heat or caloric.

FLU'ID

,
Noun.
Any substance whose parts easily move and change their relative position without separation, and which yields to the slightest pressure; a substance which flows, or which moves spontaneously on a plane with the least inclination; a liquid; liquor; opposed to a solid. Water, blood, chyle, are fluids.