absolute zero
— Noun
– English
～ (cryogenics) the lowest temperature theoretically attainable (at which the kinetic energy of atoms and molecules is minimal); 0 Kelvin or -273.15 centigrade or -459.67 Fahrenheit
Alpinia Zerumbet
— Noun
– English
～ cultivated for its shining oblong leaves and arching clusters of white flowers with pink shading and crinkled yellow lips with variegated magenta stripes
Ahmed Zoki Yamani
— Noun
– English
～ Saudi Arabian minister of petroleum who was a central figure in the creation of OPEC (born in 1930)
Antarctic Zone
— Noun
– English
～ the region around the south pole: Antarctica and surrounding waters
Arctic Zone
— Noun
– English
～ the regions to the north of the Arctic Circle centered on the North Pole
abyssal zone
— Noun
– English
～ the deep sea (2000 meters or more) where there is no light
arcus zygomaticus
— Noun
– English
～ the slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal bone