Meaning of ALPHA RAY

WordNet Dictionary
	Definition:		[n]  the radiation of alpha particles during radioactive decay
	Synonyms:		alpha radiation
	See Also:		corpuscular radiation, ionizing radiation, particulate radiation
Biology Dictionary
	Definition:		The most easily-absorbable type of radiation; it consists of a stream of alpha particles, doubly ionized helium nuclei which are electrically charged and produce intense ionization in matter. Alpha radiation can be deflected in electromagnetic fields.