| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 3,894,506,815 visitors served. |
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
shield |
Also found in: Dictionary/thesaurus, Legal, Encyclopedia, Wikipedia | 0.01 sec. |
|
|
shield (shēld) any protecting structure.
Buller's shield a watch glass fitted over the eye to guard it from infection. nipple shield a device to protect the nipple of a nursing woman.
shield Etymology: AS, scild a material for preventing or reducing the passage of charged particles or radiation. A shield may be designated by the radiation it is intended to absorb, such as a gamma ray shield, or by to the kind of protection it is intended to give, such as a background, biologic, or thermal shield. Lucite and aluminum can be used for beta-radiation shields, but lead is required for gamma ray shields. shield [shēld] 1. any protecting structure. 2. in radiology, a protective device, often made of lead, through which particualr types of rays cannot pass; used to avoid the effects of ionizing radiation.
shield Infectious control A protective device that covers the face, which has a plasticine barrier through which the user sees. See Personal protection garment Medtalk That which protects, a protective barrier. See Dalkon shield, Human shield. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
|
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup |
|---|