A movement of people/Churches that want to emphasize the main truths or fundamentals of the Christian faith. It began late in the last century as a reaction by some 
Protestants who thought other Protestants were getting away from the true Christian 
faith. Today they are found in different Churches or denominations. 

While there is variety among fundamentalist groups, some of the major points 
they uphold include: 

The Bible alone as the source of Christian belief and practice.
Literal interpretation of the Bible. 
Salvation through Jesus Christ. 
Society, the world, as a place filled with sinful, unredeemed people 
and thiings.

Source:
Youth Update Glossary
St. Anthony Messenger Press, 2002