Word Origin and History for pigment Expand. n. late 14c., from Latin pigmentum coloring matter, pigment, paint, figuratively prnament, from stem of pingere to color, paint (see paint (v.)). Variants of this word could have been known in Old English (e.g. 12c. pyhmentum). As a verb from 1900.
Vegetable oils are oils that have been extracted from various seeds. The most common include rapeseed (canola oil), soybean, corn, sunflower, safflower, peanut, etc. Unlike coconut oil or olive oil that can be extracted by pressing, these new-fangled oils have to be extracted in very unnatural ways.
Vegetable oils are also used to make biodiesel, which can be used like conventional diesel. Some vegetable oil blends are used in unmodified vehicles but straight vegetable oil, also known as pure plant oil, needs specially prepared vehicles which have a method of heating the oil to reduce its viscosity.