opeidoscope (plural opeidoscopes)
An instrument, consisting of a tube with one end open and the other end covered with a thin flexible membrane with a mirror attached to its centre, used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds that enter the tube.
Source: Wiktionary
O*pei"do*scope, n. Etym: [Gr. -scope.] (Physics)
Definition: An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tube, as by speaking or singing into it. A. E. Dolbear.
Source: Webster’s Unabridged Dictionary 1913 Edition
2 February 2025
(adverb) at or to or toward the back or rear; “he moved back”; “tripped when he stepped backward”; “she looked rearward out the window of the car”
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.
