| q.d. | quaque die; Once a Day, Every Day; 하루 한번, 매일 |
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| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
| 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... |
| night pain | Denoting especially the osteocopic pains of syphilis occurring at night. Synonym: night pain. Origin: nyct-+ G. Algos, pain (05 Mar 2000) |
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| night sight | <ophthalmology> Day blindness, defective vision in a bright light. Origin: Gr. Hemera = day, alaos = blind (18 Nov 1997) |
| night sweats | Profuse sweating at night, occurring in pulmonary tuberculosis and other chronic debilitating affections with low-grade fever. (05 Mar 2000) |
| night-terrors | A disorder allied to nightmare, occurring in children, in which the child awakes screaming with fright, the distress persisting for a time during a state of saemiconsciousness. Synonym: pavor nocturnus, sleep terror. (05 Mar 2000) |
| night vision | Vision when the eye is dark-adapted. See: dark adaptation, dark-adapted eye. Synonym: night vision, rod vision, scotopia, twilight vision. (05 Mar 2000) |
| all souls' day | The second day of November; a feast day of the Roman Catholic church, on which supplications are made for the souls of the faithful dead. Source: Websters Dictionary (01 Mar 1998) |
| alternate day strabismus | Periodic convergent strabismus often occurring every 48 hours. Synonym: alternate day strabismus. (05 Mar 2000) |
| child day care centres | Facilities which provide care for pre-school and school-age children. (12 Dec 1998) |
| riley-day syndrome | <radiology> Familial dysautonomia, autosomal recessive, seen in Jewish infants, malfunction of autonomic nervous system, possibly associated with catecholamine release and beta-NGF, hypersecretion of mucous glands, XR resembles cystic fibrosis (12 Dec 1998) |
| seven-day fever | A fever resembling dengue occurring at the end of the summer in India. Synonym: seven-day fever. Synonym: hasamiyami. (05 Mar 2000) |
| short-day plant | A plant requiring less than 12 hours of daylight in order for flowering to occur. (09 Oct 1997) |
| ninth-day erythema | An obsolete term for a nontoxic eruption that simulates measles or a toxic erythema, occurring usually on the ninth day of a course of medication; first described as a reaction to arsenical treatment of syphilis. Synonym: Milian's disease, Milian's erythema. (05 Mar 2000) |
| day | 1. The time of light, or interval between one night and the next; the time between sunrise and sunset, or from dawn to darkness; hence, the light; sunshine. 2. The period of the earth's revolution on its axis. Ordinarily divided into twenty-four hours. It is measured by the interval between two successive transits of a celestial body over the same meridian, and takes a specific name from that of the body. Thus, if this is the sun, the day (the interval between two successive transits of the sun's center over the same meridian) is called a solar day; if it is a star, a sidereal day; if it is the moon, a lunar day. See Civil day, Sidereal day, below. 3. Those hours, or the daily recurring period, allotted by usage or law for work. 4. A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time. "A man who was great among the Hellenes of his day." (Jowett (Thucyd)) "If my debtors do not keep their day, . . . I must with patience all the terms attend." (Dryden) 5. (Preceded by the) Some day in particular, as some day of contest, some anniversary, etc. "The field of Agincourt, Fought on the day of Crispin Crispianus." (Shak) "His name struck fear, his conduct won the day." (Roscommon) Day is much used in self-explaining compounds; as, daybreak, daylight, workday, etc. Anniversary day. See Anniversary, Astronomical day, a period equal to the mean solar day, but beginning at noon instead of at midnight, its twenty-four hours being numbered from 1 to 24; also, the sidereal day, as that most used by astronomers. Born days. See Born. Canicular days. See Dog day. Civil day, the mean solar day, used in the ordinary reckoning of time, and among most modern nations beginning at mean midnight; its hours are usually numbered in two series, each from 1 to 12. This is the period recognised by courts as constituting a day. The Babylonians and Hindoos began their day at sunrise, the Athenians and Jews at sunset, the ancient Egyptians and Romans at midnight. Day blindness. The mean or average of all the apparent solar days of the year. One day, One of these days, at an uncertain time, usually of the future, rarely of the past; sooner or later. "Well, niece, I hope to see you one day fitted with a husband." . Only from day to day, without certainty of continuance; temporarily. Sidereal day, the interval between two successive transits of the first point of Aries over the same meridian. The Sidereal day is 23 h. 56 m. 4.09 s. Of mean solar time. To win the day, to gain the victory, to be successful. Week day, any day of the week except Sunday; a working day. Working day. A day when work may be legally done, in distinction from Sundays and legal holidays. The number of hours, determined by law or custom, during which a workman, hired at a stated price per day, must work to be entitled to a day's pay. Origin: OE. Day, dai, dei, AS. Daeg; akin to OS, D, Dan, & Sw. Dag, G, tag, Icel. Dagr, Goth. Dags; cf. Skr. Dah (for dhagh ?) to burn. 69. Cf. Dawn. Source: Websters Dictionary (01 Mar 1998) |
| day blindness | <ophthalmology> Day blindness, defective vision in a bright light. Origin: Gr. Hemera = day, alaos = blind (18 Nov 1997) |
| day care | Institutional health care of patients during the day. The patients return home at night. (12 Dec 1998) |