noun

• (physical chemistry) A substance that is flowing, and keeping no shape, such as water; a substance of which the molecules, while not tending to separate from one another like those of a gas, readily change their relative position, and which therefore retains no definite shape, except that determined by the containing receptacle; an inelastic fluid.
  "A liquid can freeze to become a solid or evaporate into a gas."
• (phonetics) Any of a class of consonant sounds that includes l and r.
  "Many female forenames are regarded as euphonyms. What is and is not euphonious is necessarily subjective, but it could be suggested that names containing labials (b, m), sibilants (s, sh) and liquids (l, r) are more likely to be euphonyms than those that do not."

adj

• (physical chemistry) Flowing freely like water; fluid; not solid and not gaseous; composed of particles that move freely among each other on the slightest pressure.
  "liquid nitrogen"
• (finance, of an asset) Easily sold or disposed of without losing value.
• (finance, of a market) Having sufficient trading activity to make buying or selling easy.
• (phonology) Belonging to a class of consonants comprising the laterals and the rhotics, which in many languages behave similarly.
  "/l/ and /r/ are liquid consonants."