promethium

(redirected from Element 61)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Element 61: Element 65, Element 64, Element 62, Element 43

promethium

 (Pm) [pro-me´the-um]
a chemical element, atomic number 61, atomic weight 147. (See Appendix 6.)
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pro·me·thi·um (Pm),

(prō-mē'thē-ŭm),
A radioactive element of the rare earth series, atomic no. 61; first chemically identified in 1945; 145Pm has the longest known half-life (17.7 years).
[Prometheus, a Titan of G. myth who stole fire to give to mortals]
Farlex Partner Medical Dictionary © Farlex 2012

pro·me·thi·um

(Pm) (prŏ-mē'thē-ŭm)
A radioactive element of the rare earth series, atomic no. 61; 145Pm has the longest known half-life (17.7 years).
[prometheus, a Titan of G. myth who stole fire to give to mortals]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012