| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
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| OCP | octacalcium phosphate; ocular cicatricial pemphigoid; oral case presentation; oral contraceptive pil... |
| OET | oral endotracheal tube; oral esophageal tube |
| OHI | Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene In... |
| CSTT | cold-stimulation time test |
| day blindness | <ophthalmology> Day blindness, defective vision in a bright light. Origin: Gr. Hemera = day, alaos = blind (18 Nov 1997) |
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| day care | Institutional health care of patients during the day. The patients return home at night. (12 Dec 1998) |
| day-coal | <chemical> The upper stratum of coal, as nearest the light or surface. Source: Websters Dictionary (01 Mar 1998) |
| day hospital | A special facility, or an arrangement within a hospital setting, that enables the patient to come to the hospital for treatment during the day and return home or to another facility at night. Compare: night hospital. (05 Mar 2000) |
| day lily | <botany> A genus of plants (Hemerocallis) closely resembling true lilies, but having tuberous rootstocks instead of bulbs. The common species have long narrow leaves and either yellow or tawny-orange flowers. A genus of plants (Funkia) differing from the last in having ovate veiny leaves, and large white or blue flowers. Source: Websters Dictionary (01 Mar 1998) |
| day neutral plant | <botany> Plants that flower regardless of day length. (09 Oct 1997) |
| day residue | Psychoanalytic term for a dream related to an experience of the previous day. (05 Mar 2000) |
| Day, Richard | <person> U.S. Physician, 1813-1892. See: Day's test. (05 Mar 2000) |
| Day, Richard L | <person> U.S. Paediatrician, *1905. See: Riley-Day syndrome. (05 Mar 2000) |
| day sight | Night blindness or difficulty in seeing at night. Symptom of vitamin A deficiency. (27 Sep 1997) |
| day-star | 1. The morning star; the star which ushers in the day. "A dark place, until the day dawn, and the day-star arise in your hearts." (2 Peter i. 19) 2. The sun, as the orb of day. "So sinks the day-star in the ocean bed, And yet anon repairs his drooping head, And tricks his beams, and with new-spangled ore Flames in the forehead of the morning sky." (Milton) Source: Websters Dictionary (01 Mar 1998) |
| Day's test | A test for blood by adding to the suspected fluid, or the washing of a suspected stain, tincture of guaiac and then hydrogen peroxide; the presence of blood results in a blue colour. (05 Mar 2000) |
| three-day fever | Influenza-like febrile viral disease caused by several members of the bunyaviridae family and transmitted mostly by the bloodsucking sandfly phlebotomus papatasii. (12 Dec 1998) |
| three-day measles | <disease, virology> An acute, usually benign, infectious disease caused by a togavirus and most often affecting children and nonimmune young adults, in which the virus enters the respiratory tract via droplet nuclei and spreads to the lymphatic system. It is characterised by a slight cold, sore throat and fever, followed by enlargement of the postauricular, suboccipital and cervical lymph nodes and the appearances of a fine pink rash that begins on the head and spreads to become generalised. Synonym: German measles, rubeola. Origin: L. Rubellus = reddish, ruber = red (17 Dec 1997) |
| fever, five-day | See Fever, trench. (12 Dec 1998) |