AN ILLUSTRATED DICTIONARY 



Medicine, Biology, and Allied Sciences. 



A [a, av, or au, without] . The Greek letter alpha, called 

 alpha privative, equivalent to the prefix un or in. It 

 denotes absence or want of the thing or quality expressed 

 by the root of the word, a- is used before consonant, 

 and an- before vowel sounds; am- is sometimes used 

 before -bl or -be. Also, the symbol of Anode. 



Aa [ava, of eachL An abbreviation, written aa, used 

 in prescriptions to denote repetition of the same quan- 

 tity for each item. 



aaa. Abbreviation for Amalgam. 



Aasmus [a-as / -mus) [aaa/wc, a breathing out] . Asthma. 



Ab [ab, from]. A Latin prefix signifying from. 



Abaca (ab'-ak-ah, Sp. pron. ah-vah-kah'\ Manilla 

 hemp. See Hemp. Also Alusa textilis, the plant 

 which produces it. 



Abactinal \ ab-ak' -tin-af) [ab, away; actinal, the oral 

 surface of a radiate animal]. In biology, aboral. 

 -iz's term for the surface of radiates opposite to 

 that having the mouth. 



Abactio (ab-ak / -she-6) [abigere, to drive away]. An 

 abortion, or labor, artificially induced. 



Abactus Venter (ab-ak'-tus ven'-ter) [abigere, to drive 

 out ; venter, the belly]. An abortion procured by artifi- 

 cial means. 



Abadie's Sign. See Signs and Symptoms, Table of. 



Abalienated (ab-al'-yen-a-ted) [abalienatus, alienated, 

 estranged]. I. Deranged, or insane. 2. Gangrenous, 

 or so severely injured as to require amputation or extir- 

 pation. 



Abalienation {ab-dl-yen-a' '-shun) [abalienatio; ab, away ; 

 alienare, to transfer]. Decay, especially mental decay, 

 insanity. 



Abanet. See Abnet. 



Abaptista (ah-bap-tis'-taK). Same as Abaptiston. 



Abaptiston (ah-bap-tis / -ton) [a priv. ; ,3axr«n-oc, im- 

 mersed]. A trephine so shaped that penetration of the 

 brain is impossible. 



Abarthrosis (ab-ar-thro' -sis) [ab, from; arthrosis, a 

 joint]. Same as Diarthrosis, or Abarticulation. 



Abarticular {ab-ar-tik' -u-lar) [ab, from; articulus, 

 joint]. Not connected with or situated near a joint. 



Abarticulation {ab ar-tik-u-la'-shun) [ab, from; articu- 

 latio, joint]. I. Same as Diarthrosis, a term more 

 frequently used ; sometimes also a synonym of Synar- 

 throsis. 2. A luxation ; the dislocation of a joint. 



Abasia (ah-bd' '-ze-ah) [a priv. ; 3aoiQ, a step] . Motor 

 incoordination in walking. See Astasia. 



Abasic (ah-bd / -sih). Pertaining to, or affected with, 

 abasia. 



Abatement (a-bdP-ment) [ab, from; batuere, to strike]. 

 Mitigation or decrease in severity of pain, or of any 

 untoward symptom or condition. 



2 17. 



Abattoir (ah-bat-war / ) [Fr.]. A slaughter-house or 

 establishment for the killing and dressing of animals. 



Abaxial {ab-ak / -se-al) [ab, from; axis, an axle]. Not 

 situated in the line of the axis. In botany, indicating 

 that the embryo is not in the axis of the seed. 



Abbe Condenser. 'See Illuminator, Abbe. A. Illumi- 

 nator. See Illuminator. 



Abbe's Apochromatic Lenses. See Apochromatic 

 Lens. A. Catgut Rings, rings composed of eight 

 or ten turns of heavy catgut in the shape of an oval, 

 with inside diameter of two inches, for use in intesti- 

 nal anastomosis. 



Abbreviate, or Abbreviated (ab-bre'-ve-a-ted) [ab, 

 from; breviare, to shorten]. Shortened, cut short. 



Abbreviations yab-breve-a'-shunz). See List of Abbre- 

 viations in introductory matter. 



Abdomen [ab-do* '-men or ab' '-do-men) [abdere, to hide]. 

 The large inferior cavity of the trunk, extending from 

 the pelvic cavity to the diaphragm, and bounded in 

 front and at the sides by the lower ribs and abdominal 

 muscles, and behind by the vertebral column, the psoas 

 and quadratus lumborum muscles. It is artificially 

 divided into nine regions by two circular lines, the upper 

 parallel with the cartilages of the ninth ribs, the lower 

 with the iliac crests, and by fwo lines from the cartilages 

 of the eighth rib to the center of Poupart"s ligament. 

 The regions thus formed are, above, the right hvpoehon- 

 driac, the epigastric, and the left hypochondriac ; 

 secondly, the right lumbar, umbilical, and left lumbar; 

 and below, the right inguinal, the hypogastric and the 

 left inguinal. A., Pendulous, a relaxed condition 

 of the abdominal walls in which they hang down over 

 the pubis. 



Abdominal {ab-dom'-in-al) [abdere, to hide]. Pertain- 

 ing to or connected with the abdomen. A. Aneurysm. 

 See Aneurysm. A. Aorta. See Artery. A. Apo- 

 neurosis. See Aponeurosis. A. Brain, the solar 

 plexus. A. Compress, a form of local pack, made 

 by forming folds of a coarse linen towel of sufficient 

 breadth to reach from the ensiform cartilage to the 

 pubis ; one of the folds is then wrung out of cold 

 water, applied, and the remainder is rolled around the 

 body so as to retain it in position. A. Ganglia. See 

 Ganglia. A. Gestation. See Pregnancy, Extra- 

 uterine. A. Hysteria, an hysterical condition simulat- 

 ing peritonitis, in which the abdomen becomes extremely 

 painful to the touch, swollen, and distended with gas, 

 attended with temporary rise of temperature. A. Line, 

 the linea alba. A. Muscles, the internal and external 

 obliques, the transversalis. rectus, pyramidalis, and quad- 

 ratus lumborum. See Muscles, Table of. A. Pore, a 

 name applied to the openings connecting the peritoneal 



