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embryo    音标拼音: ['ɛmbri,o]
n. 胎儿,胚胎,胚芽

胎儿,胚胎,胚芽

embryo
n 1: (botany) a minute rudimentary plant contained within a seed
or an archegonium
2: an animal organism in the early stages of growth and
differentiation that in higher forms merge into fetal stages
but in lower forms terminate in commencement of larval life
[synonym: {embryo}, {conceptus}, {fertilized egg}]


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  • 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
  • What Is an Embryo? Definition and Development - ScienceInsights
    An embryo is the earliest stage of a developing baby, spanning from fertilization (when sperm meets egg) through the first eight weeks of development After those eight weeks, it’s called a fetus During this short window, a cluster of cells smaller than a grain of rice transforms into a recognizable form with a beating heart, a developing brain, and the beginnings of every major organ
  • Embryo vs. Fetus: What’s the Difference? - Healthline
    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
  • 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 and Examples - Biology Online Dictionary
    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
  • 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
  • What Is an Embryo? A Look at Early Biological Development
    An embryo represents the initial stage of development in a multicellular organism This period is characterized by rapid cell division and the establishment of the basic body plan
  • Conception: How It Works | Patient Education | UCSF Health
    Learn about each step of conception (getting pregnant), including sperm transport, egg transport, fertilization and embryo development and implantation
  • What is an Embryo? (with pictures) - AllTheScience
    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 fertilized egg may be considered an embryo until around the eighth week of pregnancy, at which point it is termed a fetus





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