praseodymium, Pr, atomic number
(noun) a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
Source: WordNet® 3.1
praseodymium (usually uncountable, plural praseodymiums)
A chemical element (symbol Pr) with an atomic number of 59, a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties.
Source: Wiktionary
Pra`se*o*dym"i*um, n. Etym: [Praseo- + didymium.] (Chem.)
Definition: An elementary substance, one of the constituents of didymium; - - so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.
Source: Webster’s Unabridged Dictionary 1913 Edition
3 April 2025
(noun) an assemblage of parts that is regarded as a single entity; “how big is that part compared to the whole?”; “the team is a unit”
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
