al-Ummah
— Noun
– English
~ a terrorist group formed in India in 1992; is believed to be responsible for bombings in southern India in 1998
Arbutus unedo
— Noun
– English
~ small evergreen European shrubby tree bearing many-seeded scarlet berries that are edible but bland; of Ireland, southern Europe, Asia Minor
Autodefensas Unidas de Colombia
— Noun
– English
~ a terrorist organization in Colombia formed in 1997 as an umbrella for local and regional paramilitary groups; is financed by earnings from narcotics and serves to protect the economic interests of its members; "the AUC conducted over 800 assassinations in one year"
apothecaries' unit
— Noun
– English
~ any weight unit used in pharmacy; an ounce is equal to 480 grains and a pound is equal to 12 ounces
angstrom unit
— Noun
– English
~ a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
angular unit
— Noun
– English
~ a unit of measurement for angles