(chemistry) One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
They are derived from the description by early spectroscopists of certain series of alkali metal spectroscopic lines as sharp, principal, diffuse, and fundamental.
Quos ille postea magno in honore habuit; centuriones in priores ordines, equites Romanos in tribunicium restituit honorem.WikiMatrix WikiMatrix
Lithium, sodium, potassium, rubidium, caesium and francium are alkali metals.
Hac confirmata opinione timoris idoneum quendam hominem et callidum deligit, Gallum, ex iis quos auxilii causa secum habebat.Tatoeba-2020.08 Tatoeba-2020.08