Printer Friendly
The Free Dictionary
990,072,282 visitors served.
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Ac
(redirected from atomic number 89)

    Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.03 sec.

Ac, chemical symbol

Ac, symbol for the element actinium actinium (ăktĭn`ēəm) [Gr.,=like a ray], radioactive chemical element; symbol Ac; at. no. 89; at. wt. 227.0278; m.p.
..... Click the link for more information. .

AC, abbreviation for alternating current

AC: see alternating current alternating current, abbr. AC, a flow of electric charge that undergoes periodic reverses in direction. In North America ordinary household current alternates at a frequency of 60 times per second. See electricity ; generator .
..... Click the link for more information. .

(Alternating Current) The common form of electricity from power plant to home/office. Its direction is reversed 60 times per second in the U.S.; 50 times in Europe. Contrast with DC.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
? Mentioned in
 
Encyclopedia browser? ? Full browser
 
 
Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2008 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Terms of Use.