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.
PTERYGIA
PTERYGIUM
pterygium
(noun) either of two thickened triangular layers of conjunctiva extending from the nasal edge of the eye to the cornea; it arises from irritation of the pinguecula
Source: WordNet® 3.1
Noun
pterygia
plural of pterygium
Source: Wiktionary
PTERYGIUM
Pte*ryg"i*um, n.; pl. E. Pterygiums, L. Pterygia. Etym: [NL., fr. Gr. (Med.)
Definition: A superficial growth of vascular tissue radiating in a fanlike manner from the cornea over the surface of the eye.
Source: Webster’s Unabridged Dictionary 1913 Edition
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2 May 2025
MINESHAFT
(noun) excavation consisting of a vertical or sloping passageway for finding or mining ore or for ventilating a mine
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