"""campagna " :: Campagna (n.) An open level tract of country; especially Campagna di Roma. The extensive undulating plain which surrounds Rome..
After Damp :: After damp () An irrespirable gas, remaining after an explosion of fire damp in mines; choke damp. See Carbonic acid..
Aid-de-camp :: Aid-de-camp (n.) An officer selected by a general to carry orders, also to assist or represent him in correspondence and in directing movements..
Ampelite :: Ampelite (n.) An earth abounding in pyrites, used by the ancients to kill insects, etc., on vines; -- applied by Brongniart to a carbonaceous alum schist..
Ampere :: Ampere (n.) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampere..
Amphiarthrosis :: Amphiarthrosis (n.) A form of articulation in which the bones are connected by intervening substance admitting slight motion; symphysis.
Amphiaster :: Amphiaster (n.) The achromatic figure, formed in mitotic cell-division, consisting of two asters connected by a spindle-shaped bundle of rodlike fibers diverging from each aster, and called the spindle..
Amphibia :: Amphibia (n. pl.) One of the classes of vertebrates.
Amphiblastic :: Amphiblastic (a.) Segmenting unequally; -- said of telolecithal ova with complete segmentation.
Amphibole :: Amphibole (n.) A common mineral embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constit