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museums of science

(Encyclopedia)museums of science, institutions or buildings where collections relevant to science and technology are preserved and displayed to promote education and research. While the preponderance of these museu...

attar of roses

(Encyclopedia)attar of roses ătˈər, ăˈtär [key], or rose oil, fragrant essential oil obtained from roses and used in making perfume. It is one of the most valuable of the volatile oils. Rose water is water in...

mother-of-pearl

(Encyclopedia)mother-of-pearl or nacre nāˈkər [key], the iridescent substance that forms the lining of the shells of some fresh-water and some salt-water mollusks. Like the pearl it is a secretion of the mantle,...

Mount of Olives

(Encyclopedia)Mount of Olives: see Olives, Mount of. ...

Atonement, Day of

(Encyclopedia)Atonement, Day of: see Yom Kippur. ...

Muhammad of Ghor

(Encyclopedia)Muhammad of Ghor, d. 1206, Afghan conqueror of N India. A brother of the sultan of Ghor, he was made governor of Ghazni in 1173 and from there launched a series of invasions of India. By 1186 he had c...

Achai of Shabcha

(Encyclopedia)Achai of Shabcha: see Aha of Shabcha. ...

Mull of Galloway

(Encyclopedia)Mull of Galloway gălˈəwā [key], headland, 239 ft (73 m) high, Dumfries and Galloway, SW Scotland, the southernmost extremity of Scotland, on the southern tip of the Rhinns of Galloway. ...

muriate of potash

(Encyclopedia)muriate of potash: see potassium chloride. ...

Athelney, Isle of

(Encyclopedia)Athelney, Isle of ăthˈəlnē [key], small area formerly surrounded by marshland, Somerset, SW England. King Alfred took refuge from the Danes there in 878 and founded a Benedictine abbey in 888. Rel...