Arkansas (in official postal use)
the chemical element argon
variant spelling of ad- assimilated before r (as in arrive, arrogate).
(forming adjectives) of the kind specified; relating to
forming nouns such as pillar
forming nouns such as bursar, exemplar, vicar
alteration of -er, -or (as in liar, pedlar).
the chemical element of atomic number 18, an inert gaseous element of the noble gas group. Argon is the commonest noble gas, making up nearly one per cent of the earth’s atmosphere
(763–809), fifth Abbasid caliph of Baghdad 786–809. The most powerful of the Abbasid caliphs, he was made famous by his portrayal in the Arabian Nights
(1207–73), Persian poet and Sufi mystic, founder of the order of whirling dervishes; also called Mawlana
a city in NE Iran, close to the border with Turkmenistan; population 2,427,316 (2006). The burial place in ad 809 of the Abbasid caliph Harun ar-Rashid and in 818 of the Shiite leader Ali ar-Rida, it is a holy city of the Shiite Muslims. It is the second-largest city in Iran