perfluorocarbon, PFC
(noun) a powerful greenhouse gas emitted during the production of aluminum
Source: WordNet® 3.1
perfluorocarbon (plural perfluorocarbons)
(organic compound) Any compound formally derived from a hydrocarbon by replacing each hydrogen atom with one of fluorine; used as refrigerants, solvents, and anesthetics.
Synonyms: PFC, fluorocarbon
Source: Wiktionary
22 December 2024
(noun) (plural) spectacles that are darkened or polarized to protect the eyes from the glare of the sun; “he was wearing a pair of mirrored shades”
Contrary to popular belief, coffee beans are not technically beans. They are referred to as such because of their resemblance to legumes. A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pit inside the red or purple fruit, often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.
