Amniotic fluid or amnia, is the fluid that surrounds and protects a developing fetus in the uterus. There are a few synonyms for the term 'amnia' including amniotic sac, fetal water, liquor amnii, and amniotic fluid. These terms are often used interchangeably by medical professionals while discussing prenatal health and labor. While rare, a rupture of the amniotic sac can cause complications during pregnancy or premature labor. Understanding the different synonyms for 'amnia' can help individuals better comprehend the complex and fascinating process of fetal development in the womb.