ASTERID, a group of starfish. They are the starfish proper, and have the typical genus Asterias (see [Starfish]).
ASTERISK (from Gr. ἀστερίσκος, a little star), the sign * used in typography. The word is also used in its literal meaning in old writers, and as a description of an ornamental form (star-shaped) in one of the utensils in the Greek Church.
ASTERIUS, of Cappadocia, sophist and teacher of rhetoric in Galatia, was converted to Christianity about the year 300, and became the disciple of Lucian, the founder of the school of Antioch. During the persecution under Maximian (304) he relapsed into paganism, and thus, though received again into the church by Lucian and supported by the Eusebian party, never attained to ecclesiastical office. He is best known as an able defender of the semi-Arian position, and was styled by Athanasius the “advocate” of the Arians. His chief work was the Syntagmation, but he wrote many others, including commentaries on the Gospels, the Psalms, and Romans. He attended many synods, and we last hear of him at the synod of Antioch in 341.
ASTERIUS, bishop of Amasia, in Pontus, c. 400. He was partly contemporary with the emperor Julian (d. 363) and lived to a great age. His fame rests chiefly on his Homilies, which were much esteemed in the Eastern Church. Most of these have been lost, but twenty-one are given in full by Migne (Patrol. Ser. Gr. xl. 164-477), and there are fragments of others in Photius (Cod. 271). Asterius was a man of much culture, and his works are a valuable contribution to our knowledge of the history of preaching.
ASTHMA (Gr. ἆσθμα, gasping, whence ἀσθμαίνω, I gasp for breath), a disorder of respiration characterized by severe paroxysms of difficult breathing (dyspnoea) usually followed by a period of complete relief, with recurrence of the attacks at more or less frequent intervals. The term is often loosely employed in reference to states of embarrassed respiration, which are plainly due to permanent organic disease of the respiratory organs (see [Respiratory System]: Pathology).
The attacks occur quite suddenly, and in some patients at regular, in others at irregular intervals. They are characterized by extreme difficulty both in inspiration and expiration, but especially in the latter, the chest becoming distended and the diaphragm immobile. In the case of “pure,” “idiopathic” or “nervous” asthma, there is no fever or other sign of inflammation. But where the asthma is secondary to disease of some organ of the body, the symptoms will depend largely on that organ and the disease present. Such secondary forms may be bronchitic, cardiac, renal, peptic or thymic.