naphthene (plural naphthenes)
(organic chemistry) Any cycloalkane (or alkyl derivative).
• Used principally in the petrochemical industry
Source: Wiktionary
Naph"thene, n. (Chem.)
Definition: A peculiar hydrocarbon occuring as an ingredient of Caucasian petroleum.
Source: Webster’s Unabridged Dictionary 1913 Edition
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.
