lutetium, lutecium, Lu, atomic number
(noun) a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Source: WordNet® 3.1
lutetium (uncountable)
A chemical element (symbol Lu) with an atomic number of 71, a silvery-white metal which resists corrosion in dry air.
• cassiopeium (name proposed by Baron Carl Auer von Welsbach, one of the discoverers of lutetium, but rejected)
Source: Wiktionary
27 December 2024
(adjective) restricted to a particular condition of life; “an obligate anaerobe can survive only in the absence of oxygen”
Contrary to popular belief, coffee beans are not technically beans. They are referred to as such because of their resemblance to legumes. A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pit inside the red or purple fruit, often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.