deuterium, heavy hydrogen
(noun) an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
Source: WordNet® 3.1
deuterium (plural deuteriums)
(isotope) An isotope of hydrogen formed of one proton and one neutron in each atom - 21H.
An atom of this isotope.
• heavy hydrogen
• D (chemical symbol)
• hydrogen
• (isotopes of hydrogen): protium, tritium, quadrium
Source: Wiktionary
31 March 2025
(adjective) done or made using whatever is available; “crossed the river on improvised bridges”; “the survivors used jury-rigged fishing gear”; “the rock served as a makeshift hammer”
Espresso is both a coffee beverage and a brewing method that originated in Italy. When making an espresso, a small amount of nearly boiling water under pressure forces through finely-ground coffee beans. It has more caffeine per unit volume than most coffee beverages. Its smaller serving size will take three shots to equal a mug of standard brewed coffee.
