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  1. Fetus - Wikipedia

    In human prenatal development, fetal development begins from the ninth week after fertilization (which is the eleventh week of gestational age) and continues until the birth of a newborn.

  2. Fetus | Growth, Development, Nutrition | Britannica

    Dec 19, 2025 · 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 …

  3. FETUS Definition & Meaning - Merriam-Webster

    The meaning of FETUS is an unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind; specifically : a developing human from usually two months after …

  4. Fetal development by week: Your baby in the womb | BabyCenter

    Apr 10, 2025 · Follow your baby's development week by week, from conception to labor, in these amazingly detailed, doctor-reviewed images. At the start of this week, you ovulate. Your egg is …

  5. Fetal Development: Week-by-Week Stages of Pregnancy

    Fetal development is how a fetus grows during pregnancy. It begins at conception and ends at birth. Many changes occur to the fetus and the pregnant person in this time.

  6. The Fetus: An Overview of Development in the Womb

    Aug 3, 2025 · The fetus represents a remarkable stage of human development, spanning from the eighth week after conception until birth. This period transforms a cluster of cells into a …

  7. Fetal Development - UF Health

    Learn how your baby is conceived and how your baby develops inside the mother's womb. Zygote; Blastocyst; Embryo; Fetus. WEEK BY WEEK CHANGES. Gestation is the period of …

  8. Fetus Definition - General Biology I Key Term | Fiveable

    A fetus is the developing human organism from approximately eight weeks after fertilization until birth. During this stage, the fetus undergoes significant growth and development, with the …

  9. Fetal development: The first trimester - Mayo Clinic

    Mar 18, 2025 · At the 11th week of pregnancy, or the ninth week after conception, your baby now is called a fetus. At this point in pregnancy, the face is broad, the eyes widely separated, the …

  10. Fetus | Research Starters - EBSCO

    Mar 6, 2025 · A fetus is an unborn human between the embryonic stage of development and birth. A fetus normally forms within eight weeks (ten weeks gestation) of conception, which is the …