It is hard to come up with a definition that will please everyone.There is a thread on why does Christianity get so much hate Why do christianity get so much hate? This along with my Trinity thread Why So Much Trinity Bashing?
...has made me wonder how are people defining Christianity, since there are many on here who don't seem to take as an authority anything other than the Bible, but the Bible has no definition of or recognition of any religion called 'Christianity' or even a concept of 'religion'. So how would you define it?
For me, I'd go to the 3 creeds and if further questions were asked, Church councils.
What do you mean by Christianity?
As a starting point, Christianity is an Abrahamic, monotheistic religion based on the Life and Teachings of Jesus.
I personally don't see belief in the Creeds or trinity as essential as its not something Jesus explicitly taught about. In that regard, I would see groups such as the Jehovah Witnesses as Christian.
I don't know exactly where the Church of the Latter Day Saints stands but they seem Christian too along with most mainstream movements post-reformation including the Catholic and Anglican Churches.
There will be exceptions of course.