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

    Mar 19, 2024 · There are three stages of fetal development: germinal, embryonic and fetal. Most people don’t talk about their pregnancy in these terms, but it can be helpful to know. The germinal stage is …

  3. FOETUS | English meaning - Cambridge Dictionary

    FOETUS definition: 1. a young human being or animal before birth, after the organs have started to develop: 2. a UK…. Learn more.

  4. 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 follows. For …

  5. Human Embryonic and Fetal Development: Stages and Milestones …

    May 12, 2025 · Human embryonic and fetal development is a fascinating journey that transforms a single cell into a fully formed fetus. This diagram illustrates the key stages from fertilization to 20 …

  6. Embryo vs. Fetus: How to Tell Them Apart - Verywell Health

    Oct 14, 2025 · Both embryo and fetus are terms used to describe the stages of a baby’s development during pregnancy. Gestational age or the length of time a person is pregnant is the main difference …

  7. 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 conception …

  8. foetus - Wiktionary, the free dictionary

    2 days ago · During the last 10 weeks in utero the foetus stores very considerable amounts of energy in the form of fat. The foetus gains all its food and oxygen from the mother during pregnancy. But there …

  9. FOETUS definition and meaning | Collins English Dictionary

    A foetus is an animal or human being in its later stages of development before it is born. Pregnant women who are heavy drinkers risk damaging the unborn foetus. Collins COBUILD Advanced …

  10. Foetus | definition of foetus by Medical dictionary

    1. The unborn young of a viviparous animal after it has taken form in the uterus. 2. In humans, the product of conception from the end of the eighth week to the moment of birth. Synonym (s): foetus.