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.
FRUSTULE
Etymology
Noun
frustule (plural frustules)
(botany) The siliceous shell of a diatom.
Anagrams
• sulfuret
Source: Wiktionary
Frus"tule, n. Etym: [L. frustulum, dim. fr. frustum a piece: cf. F. frustule.] (Bot.)
Definition: The siliceous shell of a diatom. It is composed of two valves, one overlapping the other, like a pill box and its cover.
Source: Webster’s Unabridged Dictionary 1913 Edition
Recent Word Finds
Word of the Day
22 April 2025
BRIGHT
(adjective) made smooth and bright by or as if by rubbing; reflecting a sheen or glow; “bright silver candlesticks”; “a burnished brass knocker”; “she brushed her hair until it fell in lustrous auburn waves”; “rows of shining glasses”; “shiny black patents”
Coffee Trivia
