Seizure is the name of sudden onset of a convulsion.

Sexually transmitted disease (STD) is called any infection, which is transmitted thorough sexual intercourses.

Show is called the blood – stained mucus, coming out from the vagina, and it is considered to be the indication that the woman is about to deliver.

Sickle – cell anemia is a kind of anemia, which occurs in the result of abnormal red blood cells shaped either like a sickle or like a cylinder.

Sickle – cell trait is the presence of any trait for the sickle – cell anemia. However, it does not mean the presence of the sickle – cell disease itself.

Sickle crisis is a painful episode, which is caused by sickle – cell disease.

Skin tag is called any flap or any extra buildup of skin.

Sodium is the element, which is found in most kinds of food, particularly in salt. In case of an ingestion of an excessive amount of sodium, it may cause fluid retention.

Sonography is the procedure, during which it is possible to form an image of the fetus with the help of ultrasound waves.

Spina bifida is a kind of congenital abnormality, which is characterized by some defect of the vertebral column. This occurs in case if the spinal cord membranes protrude outside the protective bony canal of the spine.

Spinal anesthesia is a kind of anesthesia, which is given into the spinal canal.

Spontaneous abortion is unintentional loss of pregnancy before the 21st week of gestation.

Stasis is the term, which is applied with the aim to describe the decreased flow.

Station is the estimation of the descent of the baby. It usually ranges from – 4 to + 4. 0 means directly at pelvis.

Stigma is the name of the area on the ovary, where the egg is released during the time of ovulation.

Still birth is called the delivery of a dead fetus after the 28th week of pregnancy.

Stress test is the kind of test, in which mild contractions of the mother’s uterus are being induced; the rate of the heart of a fetus in response to the contractions is noted.

Stretch marks are the names of the area on the skin, which have red marks and in which the skin is over stretched. As a rule it may be found on the abdominal area, as well as on the area of breasts, buttocks and legs.

Striae distensa mean streaks or the “stretch marks”, which appear on the abdomen of nearly every woman during pregnancy.

Sulci is the term, which is used to describe groove and / or furrow, present on the surface of the brain.

Surfactan is called the kind of phospholpid, which is present in the lungs. The aim or it is to provide the control of the surface tension of the lungs. Babies, who arrive before their natural term, often do not have sufficient amounts of surfactant and this is why they are not able to breath on their own.

Syphilis is one of the sexually transmitted venereal diseases, which is cause by treponema pallidum.