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A fetus or foetus (/ ˈfiːtəs /; pl.: fetuses, foetuses, rarely feti or foeti) is the unborn offspring of a viviparous animal that develops from an embryo. [1] Following the embryonic stage, the fetal stage of development takes place. Prenatal development is a continuum, with no clear defining feature distinguishing an embryo from a fetus. However, in general a fetus is characterized by the ...
Learn about the fetal stage of human development, which begins after 11 weeks of gestation and lasts until birth. Find out the characteristics, events and milestones of each of the three fetal stages, from 2 ¼ to 4 months to 6 ½ to 9 ½ months.
Foetus is a noun that means a young human being or animal before birth, after the organs have started to develop. Learn how to pronounce foetus, see related words and phrases, and find translations in other languages.
Curious about how your baby is developing in the womb? Here's a breakdown of fetal development week by week.
Learn how a fertilized egg becomes a fetus and grows into a baby over 40 weeks. Find out the key milestones and changes in each trimester of pregnancy.
You're pregnant. Congratulations! As your pregnancy goes on, you may wonder how your baby is growing and developing. Use this information to follow along with what's happening week by week during the first 12 weeks of pregnancy, called the first trimester.
During each week of pregnancy, your baby is growing. Here's a look at what medical terms like embryo and fetus mean in terms of development.
Fetus, the unborn young of any vertebrate animal, particularly of a mammal, after it has attained the basic form and structure typical of its kind. A brief treatment of the fetus follows. For more information on the human fetus, see pregnancy. Biologists arbitrarily speak of the earliest stages of
Learn the difference between an embryo, a fetus, and a baby, and how they develop from fertilization to birth. Find out the milestones, timelines, and terms related to each stage of pregnancy.
A fetus is a developing human organism in the womb from the 9th week of gestation until birth.