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.
trona (uncountable)
(mineral) A saline evaporite, consisting of mixture of sodium carbonate and sodium bicarbonate, Na3HCO3CO3·2H2O.
• NOTAR, Raton, Taron, Tonra, natro-, orant, rat on, rotan, toran
Trona
A census-designated place in Inyo County, California, United States.
• NOTAR, Raton, Taron, Tonra, natro-, orant, rat on, rotan, toran
Source: Wiktionary
Tro"na, n. Etym: [Of Egyptian or North African origin.] (Chem. & Min.)
Definition: A native double salt, consisting of a combination of neutral and acid sodium carbonate, Na2CO3.2HNaCO3.2H2O, occurring as a white crystalline fibrous deposit from certain soda brine springs and lakes; -- called also urao, and by the ancients nitrum.
Source: Webster’s Unabridged Dictionary 1913 Edition
5 May 2025
(adjective) not developed, improved, exploited or used; “vast unexploited (or undeveloped) natural resources”; “taxes on undeveloped lots are low”
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.