What does the term Immaculate Conception refer to?

I would like to know what the term Immaculate Conception refers to. I have heard many different explanations, but would like to hear an authoritative explanation from an Apologist.

Thank you.

SirKnight2007

These links should give you the answers that you need. If you have any further questions or concerns that are not answered by this, please contact Catholic Answers directly. Recommended Reading:
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[LIST]
*]
Immaculate Conception and Assumption**
]**Mary: Ever Virgin (Fathers)**
]**Mary: Full of Grace (Fathers)**
]**Mary: Mother of God (Fathers)**
*]’Brethren of the Lord’
*]Apostolic Letter Rosarium Virginis Mariae
*]Burial Box of St. James Found?
[/LIST]
Recommended Book:

[LIST]
]Refuting the Attack on Mary, Father Mateo*
[/LIST]

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