Reference
Dictionary
Encyclopedia
Thesaurus
World Factbook
Spanish Dictionary
Anatomy
Conversion Calculator

Word of the Day
perfunctory
Definition: (adjective) unenthusiastic, routine, or mechanical.
Petersons.com
Add Word of the Day to your personalized My Yahoo! page:
Add to My Yahoo! View RSS Feed
About My Yahoo! and RSS »
  
Search Dictionary:



fi·bro·in  audio  (fbr-n) KEY 

NOUN:
An insoluble white protein that is the essential component of raw silk and spider-web filaments.



 Visit our partner's site
Provided by Houghton Mifflin
logoeReference -- Download this interactive reference software to your desktop computer