An embryo (/ ˈɛmbrioʊ / EM-bree-oh) is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins …

embryo, 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 of the seventh week following …

The meaning of EMBRYO is an animal in the early stages of growth and differentiation that are characterized by cleavage, the laying down of fundamental tissues, and the formation of primitive …

Apr 12, 2023 · 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.

Oct 14, 2025 · An embryo is the early stage of development and lasts from week five to week 10 of pregnancy. A fetus is the later stage of development and lasts from the end of week 10 until birth. An …

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. Learn more and take …

embryo An early stages of a developing organism, which follows fertilization of an egg including implantation and very early pregnancy–ie, from conception to the 8 th wk of pregnancy. See …

Comprehensive guide to embryo and fetal development from Week 1 to 40. Learn about the Germinal, Embryonic, and Fetal stages, key milestones, and critical factors for a healthy pregnancy.

EMBRYO definition: 1. an animal that is developing either in its mother's womb or in an egg, or a plant that is…. Learn more.

Expand Author Comments by looking at the external appearance of embryos in sequence from . It is not so important to memorise the dates, as they are only approximate, but more important to understand …