Liquid
A liquid or fluid is one of the four fundamental states of matter. It could be characterized as a fluid of neutrally-charged atoms that were held together by intermolecular bonding. A liquid has a fixed volume, but its shape is determined by its container.

A common example of a liquid was the water found in an ocean or lake.

In 2151,  went through a layer of liquid phosphorus in the atmosphere of a class 7 gas giant, where a Suliban helix was located. ()

The Founders' natural state was that of a liquid. In 2371, the Romulans were able to distinguish individual life signs from orbit of the  via sensors, while they were in a liquid state. It was later determined that these sensor reading were false, and that the planet was deserted. ()

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Physics