3) In hardware design, a prototype is a hand-built model that represents a manufactured (easily replicable) product sufficiently for designers to visualize and test the design. The word prototype comes from the Latin words proto, meaning original, and typus, meaning form or model.
In chemistry, a salt is an ionic compound which is made up of two groups of oppositely charged ions. The ion with a positive charge is called a cation, and the one with a negative charge is called an anion.
Saline means containing salt or salt characteristics. An example of something saline is a cup of water with salt added; a saline solution. The definition of a saline is a salt source. An example of a saline is a salt lick used by horses and cows. 1  of, characteristic of, or containing common salt, or sodium chloride.  of or containing any of the salts of the alkali metals or magnesium.