Why was clemency trending last week?
abbreviation of air conditioning, by 1966.
Latin ante cibum (before a meal)
The symbol for the element actinium.
Variant of ad-.
The symbol for actinium.
Abbreviation of alternating current
A silvery-white, highly radioactive metallic element of the actinide series that is found in uranium ores. It is about 150 times more radioactive than radium and is used as a source of alpha rays and neutrons. Its most stable isotope has a half-life of about 22 years. Atomic number 89; melting point 1,050°C (1,922°F); boiling point (estimated) 3,200°C (5,792°F); specific gravity (calculated) 10.07; valence 3. See Periodic Table.