A newly developing human is typically referred to as an embryo until the ninth week after conception, when it is then referred to as a fetus. In other multicellular organisms, the word …

Apr 12, 2023 · In human pregnancies, a baby-to-be isn’t considered a fetus until the 9th week after conception, or week 11 after your last menstrual period (LMP). The embryonic period is …

Oct 5, 2025 · An embryo is the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end …

An embryo is the early stage of human development in which organs are critical body structures are formed. An embryo is termed a fetus beginning in the 11th week of pregnancy, which is …

Aug 13, 2023 · An embryo is a newly fertilized egg (zygote) up till the eighth week of development as it transforms through the morula, blastula, gastrula, and organogenesis stages.

Oct 14, 2025 · What Is an Embryo? An embryo is the early stage of a baby’s development during pregnancy. The first stage is the fertilized egg (zygote). It divides to become a blastocyst and …

May 21, 2024 · What is an Embryo? An embryo is an organism in the early stages of development which cannot survive on its own. The precise definition of it varies; in humans, for example, a …

Aug 26, 2021 · When egg and sperm meet, a zygote is formed and quickly begins dividing to become an embryo. As pregnancy progresses, the embryo becomes a fetus. The fetus …

Jul 6, 2017 · As the zygote begins to divide by mitosis, the early multicellular organism is termed an embryo. In humans, the embryonic stage of development is defined as the period from …

: an animal in the early stages of development that are marked by cleavage, the laying down of the basic tissues, and the formation of primitive organs and organ systems compare fetus. : a …