| chemical knife | Term sometimes used for restriction endonuclease. (05 Mar 2000) |
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| Merrifield knife | A long, narrow, triangularly shaped knife used in gingival surgery. (05 Mar 2000) |
| ring-knife | A circular or oval ring with internal cutting edge, on the model of the carpenter's spoke-shave, for shaving off tumours in the nasal and other cavities. Synonym: spoke-shave. (05 Mar 2000) |
| clasp-knife effect | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| clasp-knife rigidity | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| clasp-knife spasticity | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
| cooled-knife method | The cutting of frozen sections with a knife cooled to a few degrees below the freezing point. (05 Mar 2000) |
| hernia knife | A slender bladed knife, with short cutting edge, for dividing the constricting tissues at the mouth of the hernial sac. Synonym: herniotome. (05 Mar 2000) |
| Humby knife | A knife with a roller and a calibration device to cut skin grafts of different thickness. (05 Mar 2000) |
| spalting knife | A knife used in splitting codfish. Alternative forms: spalding knife. Source: Websters Dictionary (01 Mar 1998) |
| electrode knife | A blade-shaped electrical instrument used to cut tissues by means of a high-frequency electrical current. (05 Mar 2000) |
| Joseph knife | A knife for use in rhinoplasty to separate the overlying skin from the nasal dorsum. (05 Mar 2000) |
| Kirkland knife | A heart-shaped knife used in gingival surgery. (05 Mar 2000) |
| knife | Origin: OE. Knif, AS. Cnif; akin to D. Knijf, Icel. Knifr, Sw. Knif, Dan. Kniv. 1. An instrument consisting of a thin blade, usually of steel and having a sharp edge for cutting, fastened to a handle, but of many different forms and names for different uses; as, table knife, drawing knife, putty knife, pallet knife, pocketknife, penknife, chopping knife, etc. /as>. 2. A sword or dagger. "The coward conquest of a wretch's knife. <botany>" (Shak) Knife grass a tropical American sedge (Scleria latifolia), having leaves with a very sharp and hard edge, like a knife. War to the knife, mortal combat; a conflict carried to the last extremity. 1. <botany> To prune with the knife. 2. To cut or stab with a knife. Origin: Knifed; Knifing. Source: Websters Dictionary (01 Mar 1998) |
| knife needle | A very narrow, needle-pointed knife used in discission of a cataract. Synonym: cataract needle. (05 Mar 2000) |