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.
CAUSTICS
Noun
caustics
plural of caustic
Source: Wiktionary
CAUSTIC
Caus"tic, Caus"tic*al, a. Etym: [L. caustucs, Ge. Calm, Ink.]
1. Capable of destroying the texture of anything or eating away its substance by chemical action; burning; corrosive; searing.
2. Severe; satirical; sharp; as, a caustic remark. Caustic curve (Optics), a curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane.
– Caustic lime. See under Lime.
– Caustic potash, Caustic soda (Chem.), the solid hydroxides potash, KOH, and soda, NaOH, or solutions of the same.
– Caustic silver, nitrate of silver, lunar caustic.
– Caustic surface (Optics), a surface to which rays reflected or refracted by another surface are tangents. Caustic curves and surfaces are called catacaustic when formed by reflection, and diacaustic when formed by refraction.
Syn.
– Stinging; cutting; pungent; searching.
Cau"stic, n. Etym: [L. causticum (sc. medicamentum). See Caustic, a.]
1. Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.
2. (Optics)
Definition: A caustic curve or caustic surface.
Source: Webster’s Unabridged Dictionary 1913 Edition
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Word of the Day
1 June 2025
BACKFIRE
(verb) come back to the originator of an action with an undesired effect; “Your comments may backfire and cause you a lot of trouble”; “the political movie backlashed on the Democrats”
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