| phantom | That which has only an apparent existence; an apparition; a specter; a phantasm; a sprite; an airy spirit; an ideal image. "Strange phantoms rising as the mists arise." (Pope) "She was a phantom of delight." (Wordsworth) Phantom ship. See Flying Dutchman, under Flying. <medicine> Phantom tumour, a swelling, especially of the abdomen, due to muscular spasm, accumulation of flatus, etc, simulating an actual tumour in appearance, but disappearing upon the administration of an anaesthetic. Origin: OE. Fantome, fantosme, fantesme, OF. Fantome, fr. L. Phantasma, Gr, fr. To show. See Fancy, and cf. Phaeton, Phantasm, Phase. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| phantom aneurysm | A palpable throbbing aorta, mistaken by novices for an aneurysm. (05 Mar 2000) |
| phantom corpuscle | A hypochromic, crescent-shaped erythrocyte, probably resulting from artifactual rupture of a red cell with loss of haemoglobin. Synonym: achromacyte, achromatocyte, ghost corpuscle, phantom corpuscle, Ponfick's shadow, shadow corpuscle, shadow, Traube's corpuscle. Origin: G. A-priv. + chroma, colour, + kytos, hollow (cell) (05 Mar 2000) |
| phantom limb | The sensation, after amputation of a limb, that the absent part is still present; there may also be paresthesias, transient aches, and intermittent or continuous pain perceived as originating in the absent limb. (12 Dec 1998) |
| phantom limb pain | The sensation, after amputation of a limb, that the absent part is still present; there may also be paresthesias, transient aches, and intermittent or continuous pain perceived as originating in the absent limb. (12 Dec 1998) |
| phantom pregnancy | An obsolete term for false pregnancy. (05 Mar 2000) |
| phantom tumour | Accumulation of fluid in the interlobar spaces of the lung, secondary to congestive heart failure, radiologically simulating a neoplasm. (05 Mar 2000) |
| phantomatic | Phantasmal. Source: Websters Dictionary (01 Mar 1998) |
| phantomise | In psychiatry, to create mental imagery by fantasy. (05 Mar 2000) |
| phantoms, imaging | Devices or objects in various imaging techniques used to visualise or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with X-ray or ultrasonic machines. (12 Dec 1998) |
| Schultze's phantom | A model of a female pelvis used in demonstrating the mechanism of childbirth and the application of forceps. (05 Mar 2000) |
|---|