See Also: radioactive(dictionary)
Radioactive(medicine)
radioactive(dictionary)
radioactive cow(medicine)
radioactive probe(medicine)
radioactive thyroxine(medicine)
radioactive tracer(medicine)
radioactive tracers(medicine)
radioactive waste(medicine)
Radioactive Tracer(health)

pituri (iou) and radioactive (iou)


pituri (iou)



pituri noun. M19.
[Aboriginal.]
An Australian shrub of the nightshade family, Duboisia hopwoodii, containing nicotine, the leaves and twigs of which are chewed by Aborigines as a narcotic; a drug prepared from this.

radioactive (iou)



radioactive adjective. L19.
[from Radio- 4 + ACTIVE.]
Of an atomic nucleus, a substance, etc.: (capable of) undergoing spontaneous nuclear decay involving emission of ionizing radiation in the form of particles or gamma rays. L19.
Of a process, phenomenon, etc.: of, pertaining to, involving, or produced by radioactivity. E20.
M. Marrin Measure the age of the substance..from its radioactive decay.
Special collocations: radioactive equilibrium a condition in which the quantities of radioactive daughter nuclides in a material remain constant because each is formed as fast as it decays. radioactive series a series of radioactive nuclides each member of which decays into the next, together with a non-radioactive end-product; the series of transformations relating such a set of nuclides. radioactive waste waste material that is radioactive, esp. spent nuclear fuel.
radioactively adverb by radioactive decay; with radioactive material; by means of a technique dependent on radioactivity: E20.