There are four varieties of commercially viable coffee: Arabica, Liberica, Excelsa, and Robusta. Growers predominantly plant the Arabica species. Although less popular, Robusta tastes slightly more bitter and contains more caffeine.
EPICYCLOID
epicycloid
(noun) a line generated by a point on a circle rolling around another circle
Source: WordNet® 3.1
Etymology
Noun
epicycloid (plural epicycloids)
(geometry) The locus of a point on the circumference of a circle that rolls without slipping on the circumference of another circle.
Source: Wiktionary
Ep`i*cy"cloid, n. Etym: [Epicycle + -oid: cf. F. épicycloïde.] (Geom.)
Definition: A curve traced by a point in the circumference of a circle which rolls on the convex side of a fixed circle.
Note: Any point rigidly connected with the rolling circle, but not in its circumference, traces a curve called an epitrochoid. The curve traced by a point in the circumference of the rolling circle when it rolls on the concave side of a fixed circle is called a hypocycloid; the curve traced by a point rigidly connected with the rolling circle in this case, but not its circumference, is called a hypotrochoid. All the curves mentioned above belong to the class class called roulettes or trochoids. See Trochoid.
Source: Webster’s Unabridged Dictionary 1913 Edition
Word of the Day
25 November 2024
ONCHOCERCIASIS
(noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America
Coffee Trivia
