"Liquid" refers to a substance that flows freely and smoothly, often taking the shape of its container. Examples of liquids include water, juice, and oil. Full definition
Put just a teaspoon or two of liquid in at a time and help her raise the cup to her mouth. (babycenter.com)
There's a lot of debate over how the planet, even in its present position, could have had a thick enough atmosphere to keep water in liquid form on the surface. (sciencenews.org)
When rice is finished and a bit cool, add it in 1/2 cup measurements with liquid of your choice (breastmilk, formula, water etc.) and puree as needed. (wholesomebabyfood.momtastic.com)