Definition of prosthesis in English:


Pronunciation /ˈprɒsθɪˌsɪs//prɒsˈθiːsɪs/


  • 1An artificial body part, such as a limb, a heart, or a breast implant.

    ‘his upper jaw was removed and a prosthesis was fitted’
    • ‘Other implantables that are explanted, reprocessed, and reimplanted into new patients include orthopedic prostheses and dental appliances.’
    • ‘Using the chiseling system may reduce substantially the surgical time required to remove a cementless prosthesis.’
    • ‘Instead of moving skin from other parts of the body or operating in prostheses of non-biological material, it is becoming more and more common for plastic surgeons to cultivate the patient's own cells to make repairs.’
    • ‘It could also help provide the basis for developing neural prostheses capable of restoring function to paralyzed limbs.’
    • ‘Most of the hand transplants have reasonable function, working better than prostheses but not as well as replanted limbs.’
    • ‘At age 4, a left systemic-to-pulmonary fistula was performed, using a tubular prosthesis to anastomose the left subclavian artery to the left pulmonary artery.’
    • ‘The energy expenditure needed to ambulate with an above-knee prosthesis is far greater than that needed with a below-knee prosthesis.’
    • ‘For instance, a new prosthesis costing twice as much as a current prosthesis but only leading, at best, to a 20% reduction in prosthetic failure would not justify a trial or licensing.’
    • ‘If an infection occurs and a prosthesis has to be removed, it is extremely difficult to perform the operation again because of scar tissue.’
    • ‘When either cemented or cementless prostheses are to be removed, endoscopic visualization and pneumatically powered ballistic chisels can be valuable.’
    • ‘During the waiting period, I was given a temporary prosthesis - fake breasts that fit in my bra - to wear.’
    • ‘In fact, the number of caged ball and caged disk valves in this series was extremely small, so that it was impossible to demonstrate a significant difference between these types of prostheses and the other prostheses.’
    • ‘Reasons for undergoing reconstruction include inability to wear clothes, dislike of the external prosthesis, and weariness of the mastectomy deformity.’
    • ‘A pneumatically powered ballistic chiseling system also may be used to help remove a cementless prostheses or remove the cement from a primary cemented prosthesis.’
    • ‘A retinal prosthesis may provide artificial vision to people who have lost their sight due to diseases affecting the retina.’
    • ‘The single most critical aspect of any prosthesis is the quality of the interface between the limb remnant and the artificial prosthesis.’
    • ‘For example, in one complaint, a company-made prosthesis was removed due to loose hardware and infection, the warning letter said.’
    • ‘With the laser, the neomembrane and scar can be safely removed and the new prosthesis can be accurately placed.’
    • ‘Now, the impersonal one-size-fits-all breast prostheses may become a thing of the past.’
    • ‘Tell the technologist if you have any metal or electronic devices in your body, such as metallic joint prostheses, artificial heart valves, implanted electronic devices, cochlear implants or magnets in your dentures.’
  • 2Linguistics
    The addition of a letter or syllable at the beginning of a word, as in Spanish escuela derived from Latin scola.


Mid 16th century (in prosthesis (sense 2)): via late Latin from Greek prosthesis, from prostithenai, from pros ‘in addition’ + tithenai ‘to place’.