RADIOACTIVE MATERIAL

Pronunciation (US):

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 Dictionary entry overview: What does radioactive material mean? 

• RADIOACTIVE MATERIAL (noun)
  The noun RADIOACTIVE MATERIAL has 1 sense:

1. material that is radioactive

  Familiarity information: RADIOACTIVE MATERIAL used as a noun is very rare.

 Dictionary entry details 

• RADIOACTIVE MATERIAL (noun)

Sense 1

Meaning:

Material that is radioactive

Classified under:

Nouns denoting substances

Hypernyms ("radioactive material" is a kind of...):

material; stuff (the tangible substance that goes into the makeup of a physical object)

Hyponyms (each of the following is a kind of "radioactive material"):

radioactive waste (useless radioactive materials that are left after some laboratory or commercial process is completed)

 Context examples 

When radioactive material is used to examine the thyroid with a scanner, nodules that collect more radioactive material than the surrounding thyroid tissue are considered "hot."

(Hot nodule, NCI Dictionary)

Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy).

(Irradiation, NCI Dictionary)

A type of radiation therapy in which radioactive material is placed inside the body, into a tumor or body cavity.

(Internal radiation therapy, NCI Thesaurus)

Before the test, you receive a small amount of radioactive material.

(Nuclear Scans, NIH)

Cancer cells are killed by the energy given off as the radioactive material breaks down and becomes more stable.

(Palladium Pd-103, NCI Dictionary)

A type of internal radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into a tumor or body tissue.

(Interstitial radiation therapy, NCI Dictionary)

A unit of radioactive decay expressed in atoms of radioactive material that decay over a period of time equal to sixty seconds.

(Disintegration per Minute, NCI Thesaurus)

An object or material, such as an alloplastic or radioactive material or tissue, partially or totally inserted or grafted into the body for prosthetic, therapeutic, diagnostic, or experimental purposes.

(Implant Failure, Food and Drug Administration)

The anatomic site at which a material such as a tissue, graft, device or radioactive material is inserted with some intended degree of permanence.

(Implantation Site, NCI Thesaurus)

As they grow, asteroids incorporate radioactive material present in the solar system nebula.

(Vitamin B3 might have been made in space, delivered to Earth by meteorites, NASA)