(obsolete) The mechanics of atoms.

A monoclonal antibody used in the combination drug atoltivimab/maftivimab/odesivimab to treat Zaire ebolavirus.

an atomic clock which uses the 1.4 GHz transition in a hydrogen atom to measure time to within 0.45 nanoseconds over a span of 12 hours

plural of hydrogen maser atomic clock

A medication used to treat migraines.

The exposure of plants to radioactive sources, typically cobalt-60, in order to generate mutations that may prove to have useful properties.

Synonym of Wake Island

An island in the United States, among the islands of Polynesia in the Pacific Ocean

(simile, uncommon) With absolute regularity and precision; faultlessly.

(physics, chemistry, dated) Pedantic form of mass number. Symbol: A.