Search this site:
Primary Navigation
Home
K-12 School
College & Grad School
Courses & Degrees
Reference
Homework Help
Yahoo! Education
>
Reference
>
Dictionary
> rarefaction
Definition of rarefaction
Reference
Dictionary
Encyclopedia
Thesaurus
World Factbook
Spanish Dictionary
Quotations
Anatomy
Conversion Calculator
Word of the Day
competent
Definition: (adjective) having the skill and knowledge needed for a particular task; capable
Petersons.com
Add Word of the Day to your personalized My Yahoo! page:
About My Yahoo! and RSS »
Email this page to a friend
< raree show
rarefied >
rar·e·fac·tion
(rār
-f
k
sh
n)
KEY
NOUN:
A decrease in density and pressure in a medium, such as air, caused by the passage of a sound wave.
The region in which this occurs.
OTHER FORMS:
rar
e·fac
tive
(Adjective)
Visit our partner's site
Provided by Houghton Mifflin
eReference -- Download this interactive reference software to your desktop computer
Search Dictionary:
More on Yahoo! Education
Online and On-Campus Degree Programs
MBAs
-
Technology Management
-
Education
-
Health
-
More
College & Grad School - A Comprehensive Guide
College Search
-
Test Prep
-
Application Tips
-
Scholarship Search
-