Embryo - Wikipedia 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 "embryo" can be used more broadly to any early developmental or life cycle stage prior to birth or hatching
Embryo | Description, Characteristics, Development | Britannica 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 of the seventh week following conception
EMBRYO Definition Meaning - Merriam-Webster : 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 tiny young plant within a seed : a beginning or undeveloped stageused especially in the phrase in embryo
Embryo | definition of Embryo by Medical dictionary embryo An organism in its earliest stages of development, especially before it has reached a stage at which it can be distinguished from other species The human embryo is so called up to the eighth week after fertilization After that it is called a fetus
Embryo vs. Fetus: How to Tell Them Apart - Verywell Health 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
Embryo - healthencyclopedia. org An embryo is defined as the developing organism from the time of fertilization until the end of the eighth week of gestation, when it becomes known as a fetus In human pregnancy, the embryonic period begins when a sperm fertilizes an egg, creating a zygote
Embryo - Definition, Development, Stages and Quiz | Biology Dictionary 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 week 5 to week 11 of gestation After this stage, the embryo transitions into a fetus