pentoxide
(noun) an oxide containing five atoms of oxygen in the molecule
Source: WordNet® 3.1
pentoxide (plural pentoxides)
(chemistry) any oxide containing five oxygen atoms in each molecule
Source: Wiktionary
Pen*tox"ide, n. Etym: [Penta- + oxide.] (Chem.)
Definition: An oxide containing five atoms of oxygen in each molecule; as, phosphorus pentoxide, P2O5.
Source: Webster’s Unabridged Dictionary 1913 Edition
7 June 2025
(noun) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years
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.