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The Collaborative International Dictionary of English v.0.48 (gcide)

Liquid \Liq"uid\ (l[i^]k"w[i^]d), a. [L. liquidus, fr. liquere
to be fluid or liquid; cf. Skr. r[imac] to ooze, drop,
l[imac] to melt.]
1. Flowing freely like water; fluid; not solid.
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Yea, though he go upon the plane and liquid water
which will receive no step. --Tyndale.
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2. (Physics) Being in such a state that the component
molecules move freely among themselves, but have a
definite volume changing only slightly with changes of
pressure, and do not tend to separate from each other as
the particles of gases and vapors do when the volume of
the container is increased; neither solid nor gaseous; as,
liquid mercury, in distinction from mercury solidified or
in a state of vapor.

Note: Liquid substances may form a definite interface with
gases, whereas the molecules of different gases freely
intermingle with each other.
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3. Flowing or sounding smoothly or without abrupt transitions
or harsh tones. "Liquid melody." --Crashaw.
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4. Pronounced without any jar or harshness; smooth; as, l and
r are liquid letters.
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5. Fluid and transparent; as, the liquid air.
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6. Clear; definite in terms or amount. [Obs.] "Though the
debt should be entirely liquid." --Ayliffe.

7. (Finance) In cash or readily convertible into cash without
loss of principle; -- said of assets, such as bank
accounts, or short-term bonds tradable on a major stock
exchange.
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{Liquid glass}. See {Soluble glass}, under {Glass}.
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Liquid \Liq"uid\, n.
1. A substance whose parts change their relative position on
the slightest pressure, and therefore retain no definite
form; any substance in the state of liquidity; a fluid
that is not gaseous and has a definite volume independent,
of the container in which it is held. Liquids have a fixed
volume at any given pressure, but their shape is
determined by the container in which it is contained.
Liquids, in contrast to gases, cannot expand indefinitely
to fill an expanding container, and are only slightly
compressible by application of pressure.
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Note: Liquid and fluid are terms often used synonymously, but
fluid has the broader signification. All liquids are
fluids, but many fluids, as air and the gases, are not
liquids.
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2. (Phon.) A letter which has a smooth, flowing sound, or
which flows smoothly after a mute; as, l and r, in bla,
bra. M and n also are called liquids.
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{Liquid measure}, a measure, or system of measuring, for
liquids, by the gallon, quart, pint, gill, etc.
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