Mississippi Code Title 41. Public Health § 41-41-133

(a) “Abortion” means the use or prescription of any instrument, medicine, drug or any other substance or device to terminate the pregnancy of a woman known to be pregnant with an intention other than to increase the probability of a live birth, to preserve the life or health of the child after live birth or to remove a dead fetus.

(b) “Gestational age” means the time that has elapsed since the first day of the woman's last menstrual period as determined using methods consistent with standard medical practice in the community.

(c) “Severe fetal abnormality” means a life-threatening physical condition that, in reasonable medical judgment, regardless of the provision of life-saving medical treatment, is incompatible with life outside the womb.

(d) “Major bodily function” includes, but is not limited to, functions of the immune system, normal cell growth, and digestive, bowel, bladder, neurological, brain, respiratory, circulatory, endocrine and reproductive functions.