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.
rigorous, stringent, tight
(adjective) demanding strict attention to rules and procedures; “rigorous discipline”; “tight security”; “stringent safety measures”
rigorous, strict
(adjective) rigidly accurate; allowing no deviation from a standard; “rigorous application of the law”; “a strict vegetarian”
Source: WordNet® 3.1
rigorous (comparative more rigorous, superlative most rigorous)
Showing, causing, or favoring rigour; scrupulously accurate or strict; thorough.
Severe; intense.
• (showing, causing or favoring rigor): painstaking, scrupulous; see also meticulous
• (severe; intense): harsh, strict; see also stern
• (severe; intense): arbitrary, capricious, whimsical
Source: Wiktionary
Rig"or*ous, a. Etym: [F. rigoureux, LL. rigorosus. See Rigor.]
1. Manifesting, exercising, or favoring rigor; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration. He shall be thrown down the Tarpeian Rock With rigorous hands. Shak. We do not connect the scattered phenomena into their rigorous unity. De Quincey.
2. Severe; intense; inclement; as, a rigorous winter.
3. Violent. [Obs.] "Rigorous uproar." Spenser.
Syn.
– Rigid; inflexible; unyielding; stiff; severe; austere; stern; harsh; strict; exact.
– Rig"or*ous*ly, adv.
– Rig"or*ous*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition
17 March 2025
(noun) magnet made of a substance whose magnetization is proportional to the strength of the magnetic field applied to it
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.