| jet ejector pump | A suction pump in which fluid under high pressure is forced through a nozzle into an abruptly larger tube where a high velocity jet, at a low pressure in accordance with Bernoulli's law, entrains gas or liquid from a side tube opening just beyond the end of the nozzle to create suction; e.g., the pump by which steam is used to evacuate an autoclave, a water aspirator. (05 Mar 2000) |
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| jet injection | Hypodermic injection of drugs by a jet injector. (05 Mar 2000) |
| jet injector | An injector that uses high pressure to force a liquid through a small orifice at a velocity sufficient to penetrate skin or mucous membrane without the use of a needle. (05 Mar 2000) |
| jet lag | An imbalance of the normal circadian rhythm resulting from subsonic or supersonic travel through a varied number of time zones and leading to fatigue, irritability, and various functional disturbances. (05 Mar 2000) |
| jet nebuliser | An atomiser that uses an air or gas stream to change a liquid into small particles. (05 Mar 2000) |
| jeterus | <botany> A yellowness of the parts of plants which are normally green; yellows. Source: Websters Dictionary (01 Mar 1998) |
| jetty | Origin: F.jetee a pier, a jetty, a causeway. See Jet a shooting forth, and cf. Jutty. 1. A part of a building that jets or projects beyond the rest, and overhangs the wall below. 2. A wharf or pier extending from the shore. 3. <physics> A structure of wood or stone extended into the sea to influence the current or tide, or to protect a harbor; a mole; as, the Eads system of jetties at the mouth of the Mississippi River. Jetty ad, a projecting part at the end of a wharf; the front of a wharf whose side forms one of the cheeks of a dock. Source: Websters Dictionary (01 Mar 1998) |
| Jeune's syndrome | Hereditary hypoplasia of the thorax, associated with pelvic skeletal abnormality. Synonym: asphyxiating thoracic chondrodystrophy, Jeune's syndrome, thoracic-pelvic-phalangeal dystrophy. (05 Mar 2000) |
| Jeune, M | <person> 20th century French paediatrician. See: Jeune's syndrome. (05 Mar 2000) |
| jew | Originally, one belonging to the tribe or kingdom of Judah; after the return from the Babylonish captivity, any member of the new state; a Hebrew; an Israelite. Jew's frankincense, gum styrax, or benzoin. <botany> Jew's mallow, an annual herb (Corchorus olitorius) cultivated in Syria and Egypt as a pot herb, and in India for its fibre. Jew's pitch, asphaltum; bitumen. The Wandering Jew, an imaginary personage, who, for his cruelty to the Savior during his passion, is doomed to wander on the earth till Christ's second coming. Origin: OF. Juis, pl, F. Juif, L. Judaeus, Gr, fr. The country of the Jews, Judea, fr. Heb. Yhdah Judah, son of Jacob. Cf. Judaic. Source: Websters Dictionary (01 Mar 1998) |
| jew's-ear | <botany> A species of fungus (Hirneola Auricula-Judae, or Auricula), bearing some resemblance to the human ear. Source: Websters Dictionary (01 Mar 1998) |
| jew's-harp | Origin: Jew + harp; or possibly a corrupt. Of jaw's harp; cf. G. Maultrommel, lit, mouthdrum]</ety 1. An instrument of music, which, when placed between the teeth, gives, by means of a bent metal tongue struck by the finger, a sound which is modulated by the breath; called also Jew's-trump. 2. The shackle for joining a chain cable to an anchor. Source: Websters Dictionary (01 Mar 1998) |
| jewbush | <botany> A euphorbiaceous shrub of the genus Pedilanthus (P. Tithymaloides), found in the West Indies, and possessing powerful emetic and drastic qualities. Source: Websters Dictionary (01 Mar 1998) |
| jeweller's forceps | A small thumb forceps with very fine pointed blades, used to grasp tissues in microsurgical procedures. (05 Mar 2000) |
| jewelweed | <botany> See Impatiens. Source: Websters Dictionary (01 Mar 1998) |