involuntary violent expiration of air through the nose and mouth. It results from stimulation of the nervous system in the nose, causing sudden contra...
missile or steerable bomb equipped with a laser, television, or satellite guidance system. Smart weapons, which use guidance systems that rely on exte...
in the Roman Catholic Church, name of many independent communities of women. Most of them owe their origin to the institute of St. Vincent de Paul, fo...
1693–1762, English astronomer. His discovery of the aberration of light, announced in 1728, provided an important line of evidence for the motion of...