conception
n
1 something conceived; notion, idea, design, or plan
2 the description under which someone considers something
her conception of freedom is wrong
3 the fertilization of an ovum by a sperm in the Fallopian tube followed by implantation in the womb
4 origin or beginning
from its conception the plan was a failure
5 the act or power of forming notions; invention (C13: from Latin conceptio, from concipere to conceive) ♦
conceptional, conceptive adj
Immaculate Conception
n (Christian theol, R.C. Church) the doctrine that the Virgin Mary was conceived without any stain of original sin