Gravidities refers to the state of being pregnant or carrying a child. However, there are several synonyms for the term including gestation, pregnancy, and expectancy. These words all suggest a period of time where a woman is carrying a developing baby in her womb. Other synonyms for gravidities include fertilization, conception, and inception. These synonyms focus more on the beginning stages of pregnancy, when a woman's egg is fertilized by sperm and the development of the baby has just begun. No matter which synonym is used, the underlying meaning remains the same; the state of being pregnant.