metal (redirected from noble metal)

metal /met·al/ (met´'l) any element marked by luster, malleability, ductility, and conductivity of electricity and heat and which will ionize positively in solution.metal´lic

---

alkali metal  any of a group of monovalent metals, including lithium, sodium, potassium, rubidium, and cesium.

heavy metal  one with a high specific gravity, usually defined as over 5.0; some cause heavy metal poisoning.

---

met·al (mtl)

n.

1. Any of a category of electropositive elements that usually reflect light, are generally good conductors of heat and electricity, and can be melted or fused, hammered into thin sheets, or drawn into wires. Typical metals form salts with nonmetals, basic oxides with oxygen, and alloys with one another.

2. An alloy of two or more metallic elements.

3. An object made of metal.

---

metal

Etymology: Gk, metallon, a mine

an element that conducts heat and electricity, is malleable and ductile, and forms positively charged ions (cations). About 80% of the known elements are metals.

---

metal,

n one of the five phases, or elements, in Chinese cosmological and medical theory, whose characteristic manifestations include analysis, logic, morality, pessimism, precision, and self-control.

---

metal,

n an element possessing luster, malleability, ductility, and conductivity of electricity and heat.

metal, base,

n an older term referring to nonprecious metals or alloys such as iron, lead, copper, nickel, chromium, and zinc. In dentistry, the term usually refers to the stainless steel and chrome-cobalt-nickel alloys.

metal ceramic alloys,

n the fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.

metal, fusion of,

n the blending of metals by melting together.

metal insert teeth,

n.pl See tooth, metal insert.

metal, noble,

n a precious metal, usually one that does not readily oxidize, such as gold or platinum.

metal, solidification of,

n the change of metal from the molten to the solid state.

metal, wrought,

n a cast metal that has been cold-worked in any manner.

---

metal

any chemical element marked by luster, malleability, ductility and conductivity of electricity and heat, and which will ionize positively in solution.

---

alkali metal

one of a group of monovalent elements including lithium, sodium, potassium, rubidium and cesium.

metal detector

a portable electronic device used to detect metal in the reticulum of cows. Most clinically normal cows fed on prepared rations give positive results.

metal implants

see implant.

metal retriever

a long, probang-like instrument, passed orally into the reticulum in cattle for the retrieval of metallic foreign bodies that might cause traumatic reticuloperitonitis.

---

Patient discussion about noble metal.

Q. Allergy to Nickel- can it happen? i though that only organic materials can cause allergy… but I started a new job that exposed me to Nickel and have, or so it seems, an allergic reaction to it…

A. Of course it can happen! Here you go:
http://www.mayoclinic.com/health/nickel-allergy/DS00826

Q. I was told that platinum is used in fragrances for the fullness of the spray. Please tell me more! Three years ago I was diagnosed with off the lab chart levels of platinum in my body. I have no hobby or avenue for exposure other than my work. I have sold fragrances for over ten years. Even the Regional EPA Air Quality person doesnt know where I am getting this. I was told by a health director who made some calls. He told me that platinum is used in fragrances for the "fullness of the spray". Would you please tell me more about this? Thank you!

A. i never heard of it. but i know that there are alot of materials in fragrance spreading instruments that are not healthy. some do use metal salts, and in a large quantities it can be harmful. about Platinum- you can look on the lists of materials or send it to a lab to check it out.