| dog-headed | <zoology> Having a head shaped like that of a dog; said of certain baboons. Source: Websters Dictionary (01 Mar 1998) |
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| dog-hearted | Inhuman; cruel. Source: Websters Dictionary (01 Mar 1998) |
| dog-rose | <botany> A common European wild rose, with single pink or white flowers. Source: Websters Dictionary (01 Mar 1998) |
| dogbane | <botany> A small genus of perennial herbaceous plants, with poisonous milky juice, bearing slender pods pods in pairs. Origin: Said to be poisonous to dogs. Cf. Apocynaceous. Source: Websters Dictionary (01 Mar 1998) |
| dogberry | <botany> The berry of the dogwood; called also dogcherry. <botany> Dogberry tree, the dogwood. Source: Websters Dictionary (01 Mar 1998) |
| dogday | One of the dog days. <zoology> Dogday cicada, a large American cicada (C. Pruinosa), which trills loudly in midsummer. A period of from four to six weeks, in the summer, variously placed by almanac makers between the early part of July and the early part of September; canicular days; so called in reference to the rising in ancient times of the Dog Star (Sirius) with the sun. Popularly, the sultry, close part of the summer. The conjunction of the rising of the Dog Star with the rising of the sun was regarded by the ancients as one of the causes of the sultry heat of summer, and of the maladies which then prevailed. But as the conjunction does not occur at the same time in all latitudes, and is not constant in the same region for a long period, there has been much variation in calendars regarding the limits of the dog days. The astronomer Roger Long states that in an ancient calendar in Bede (died 735) the beginning of dog days is placed on the 14th of July; that in a calendar prefixed to the Common Prayer, printed in the time of Queen Elizabeth, they were said to begin on the 6th of July and end on the 5th of September; that, from the Restoration (1660) to the beginning of new Style (1752), British almanacs placed the beginning on the 19th of July and the end on the 28th of August; and that after 1752 the beginning was put on the 30th of July, the end on the 7th of September. Some English calendars now put the beginning on July 3d, and the ending on August 11th. A popular American almanac of the present time (1890) places the beginning on the 25th of July, and the end on the 5th of September. Source: Websters Dictionary (01 Mar 1998) |
| dogfish | <zoology> 1. A small shark, of many species, of the genera Mustelus, Scyllium, Spinax, etc. The European spotted dogfishes (Scyllium catudus, and S. Canicula) are very abundant; the American smooth, or blue dogfish is Mustelus canis; the common picked, or horned dogfish (Squalus acanthias) abundant on both sides of the Atlantic. 2. The bowfin (Amia calva). See Bowfin. 3. The burbot of Lake Erie. Source: Websters Dictionary (01 Mar 1998) |
| dogger | A two-masted fishing vessel, used by the Dutch. A sort of stone, found in the mines with the true alum rock, chiefly of silica and iron. Origin: D, fr. Dogger codfish, orig. Used in the catching of codfish. Source: Websters Dictionary (01 Mar 1998) |
| Dogiel's cells | The different cell types in cerebrospinal ganglia. (05 Mar 2000) |
| Dogiel's corpuscle | An encapsulated sensory nerve ending. (05 Mar 2000) |
| Dogiel, Alexander | <person> Russian histologist, 1852-1922. See: Dogiel's corpuscle. (05 Mar 2000) |
| Dogiel, Jan von | <person> Russian anatomist and physiologist, 1830-1905. See: Dogiel's cells. (05 Mar 2000) |
| dogma | A theory or belief that is formally stated, defined, and thought to be true. (05 Mar 2000) |
| dogmatic | One of an ancient sect of physicians who went by general principles; opposed to the Empiric. Source: Websters Dictionary (01 Mar 1998) |
| dogmatic school | Ancient Greek school or tradition in medicine whose members were the successors to or followers of Hippocrates; they based their conceptions of disease upon the humoral theory and their practice upon experience and sound reasoning, and were comparatively free from fads, speculative theories, and dogma, which the term dogmatic falsely implies. (05 Mar 2000) |