A comprehensive medical dictionary : containing the pronunciation, etymology, and signification of the terms made use of in medicine and the kindred sciences / with an appendix, comprising a complete list of all the more important articles of the materia medica, arranged according to their medicinal properties; also an explanation of the Latin terms and phrases occurring in anatomy, pharmacy, etc.; together with the necessary directions for writing Latin prescriptions, etc., etc.
- Joseph Thomas
- Date:
- 1875
Licence: Public Domain Mark
Credit: A comprehensive medical dictionary : containing the pronunciation, etymology, and signification of the terms made use of in medicine and the kindred sciences / with an appendix, comprising a complete list of all the more important articles of the materia medica, arranged according to their medicinal properties; also an explanation of the Latin terms and phrases occurring in anatomy, pharmacy, etc.; together with the necessary directions for writing Latin prescriptions, etc., etc. Source: Wellcome Collection.
Provider: This material has been provided by the University of Massachusetts Medical School, Lamar Soutter Library, through the Medical Heritage Library. The original may be consulted at the Lamar Soutter Library at the University of Massachusetts Medical School.
![iE'thiops per se* (per so). The name given by Boerhaave to the gray oxide formed by long agitation of mer- cury in a bottle half full of air. iE'thiops Veg-e-tab'I-lis.* A name given to a specie-? of charcoal, prepared by burning the Fucus vesiculoaus in the open air and reducing it to a black powder. iEtn'©-gen. [From al6o;, fire, or light, and yswdoi, to produce.] A compound of boron and nitrogen, which gives a brilliant phosphorescent light when heated before the blow-pipe. -fE'tliri-scope. [From dip9a, the clear sky, and uvon-icj, to observe.] An instrument invented by Sir John Leslie for indicating the power of the clouds in preventing radiation. It con- sists of the differential thermometer, having one of the balls excluded from the light and the oth^r placed in a polished metallic cup. Exposed to a clear part of the sky, the heat radiated from it escapes rapidly, and the tem- perature falls; exposed to a cloud, the radiated heat is restored and there is no reduction of temperature. JE-tJiu'sa €y-iia'pl-um.* Lesser Hemlock, or Fool's Parsley; a plant of the order Umbelliferee, possessing poi- sonous properties. It yields an alkaloid called cynapin. ^E-ti-ol'o-gy. [iEtiolo'gia; from atria, cause, and \6yo;, a discourse.] The science of the causes of disease. Aetites,® a-e-ti'tez. [From dsrv;, an eagle, Xido;, a stone, being under- stood.] Eagle-stone. A clay-ironstone, hollow, and containing another substance within it of variable composition. Af-fec'tion. [Aflfec'tio, o'nis ; from officio, affec'tiim, to affect, to dis- turb.] Nearly synonymous with dis- ease, as inflammatory, nervous, or rheu- matic affection, etc. Af'fer-ens.* [From ad, to, and/e'ro, to bring.] Applied to the lymphatic vessels, or Vasa afferentia: afferent. Afferejitia,* af-fer-en'she-a, the plu- ral neuter of Afferens, which see. Af-flji'I-ty. [AtHai'itas, a'tis; from nd, to, on, and fi'nis, boundary: affi'nis, on the boundary, near, connected with, neighboring.] Literally, connection by marriage. That kind of attraction by which differ- ent classes of substances combine to form new substances, as in the case of an alkali with an acid, forming a salt. As marriage unites persons of different or opposite sexes, so affinity unites sub- stances of different and often opposite qualities: e.g. a supporter of combustion with a combustible, an alkali with ail acid, etc. Affinity is sometimes used, but less appropriately, to denote attrac- tion in a more general sense. See Af- finity of Aggregation. Single or Simple Affinity is the power by which two elementary bodies combine. Elec'tive Affinity denotes the pre- ference which one body manifests in combining with another rather than with a third or fourth, etc. Double Elective Affinity occurs when two compounds decompose each other and two new compounds are formed by an exchange of elements. Thus, when sulphate of zinc and carbon- ate of potassa are mixed, the sulphuric acid leaves the zinc and unites with the potassa, forming sulphate of potassa, while the carbonic acid combines with the zinc, producing carbonate of zinc. Quies'cent Affinity is that which tends to maintain the elements of a compound in their present state, prevent- ing decomposition. Divel'lent Affinity (from divel'lo, to pull apart, to separate) is that which tends to arrange the particles of a compound in a new form, producing decomposition. In mixing different com- pounds, if the sum total of the divellent be more powerful than that of the qui- escent affinities, decomposition takes place. Disposing Affinity is that which promotes the tendency of bodies to combine in a particular way, by pre- senting to them a third substance which exerts a strong attraction to the com- pound they form: when the combina- tion has been effected, the third sub- stance may be withdrawn. Some writers call this tendency to unite the affinity of intermedium, or intermediate affinity. Berthollet styles it reciprocal affinity. Affin'ity of Ag-gre-ga'tion. A force by which two substances tend to com- bine and form an aggregate, without their properties being changed. An- other term for the attraction of cohesion. Affin'ity, Chem'i-cal, or Affin'ity proper. That property or attraction by which different elements unite with each other, forming new substances. Sea Affinity. Affinity, Intermediate. See Af- finity (Disposing).](https://iiif.wellcomecollection.org/image/b21197015_0035.jp2/full/800%2C/0/default.jpg)
