noun

• The act of conceiving.
• The state of being conceived; the beginning.
• The fertilization of an ovum by a sperm to form a zygote.
• The start of pregnancy.
• The formation of a conceptus or an implanted embryo.
• The power or faculty of apprehending of forming an idea in the mind; the power of recalling a past sensation or perception; the ability to form mental abstractions.
• An image, idea, or notion formed in the mind; a concept, plan or design.