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ovum    音标拼音: ['ovəm]
n. 卵,卵子,卵形装饰

卵,卵子,卵形装饰

ovum
n 1: the female reproductive cell; the female gamete [synonym:
{ovum}, {egg cell}]

Ovum \O"vum\ ([=o]"v[u^]m), n.; pl. L. {Ova} ([=o]"v[.a]), E.
{Ovums} ([=o]"v[u^]mz). [L., an egg. See {Oval}.]
1. (Biol.) A more or less spherical and transparent cell,
which by a process of multiplication and growth develops
into a mass of cells, constituting a new individual like
the parent; an egg, spore, germ, or germ cell. See Illust.
of {Mycropyle}.
[1913 Webster]

Note: The ovum is a typical cell, with a cell wall, cell
substance, nucleus, and nucleolus. In man and the
higher animals the cell wall, a vertically striated
membrane, is called the zona pellucida; the cell
contents, the vitellus; the nucleus, the germinal
vesicle; and the nucleolus, the germinal spot. The
diameter of the ripe ovum in man and the domestic
animals varies between 1-200 and 1-120 of an inch.
[1913 Webster]

2. (Arch.) One of the series of egg-shaped ornaments into
which the ovolo is often carved. --Gwilt.
[1913 Webster]


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  • Egg cell - Wikipedia
    The egg cell or ovum (pl : ova) is the female reproductive cell, or gamete, [1] in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one)
  • Ovum (Egg Cell): Structure, Function Fertilization
    An ovum is another name for an egg cell You release an ovum at ovulation Learn how an ovum turns into an embryo
  • Ovum | Structure, Function Fertilization | Britannica
    Ovum, in human physiology, single cell released from either of the female reproductive organs, the ovaries, which is capable of developing into a new organism when fertilized (united) with a sperm cell The outer surface of each ovary is covered by a layer of cells (germinal epithelium); these
  • Egg Cell: Structure, Types, Functions and Oogenesis
    The egg cell, also known as the ovum, is the female reproductive cell The egg cell is released from the ovaries in the female reproductive system
  • Human fertilization - Wikipedia
    Human fertilization is the union of an egg cell and a sperm, occurring primarily in the ampulla of the fallopian tube [1] The result of this union leads to the production of a fertilized egg called a zygote, initiating embryonic development Scientists discovered the dynamics of human fertilization in the 19th century [2] The process of fertilization involves a sperm fusing with an egg cell
  • What Is an Ovum? The Anatomy of the Human Egg Cell
    Explore the anatomy of the ovum, the largest human cell Understand its unique structure, limited lifespan, and crucial role in human conception
  • Oogenesis | Egg Development, Maturation Fertilization | Britannica
    Oogenesis, in the human female reproductive system, growth process in which the primary egg cell (or ovum) becomes a mature ovum In any one human generation, the egg’s development starts before the female that carries it is even born; 8 to 20 weeks after the fetus has started to grow, cells that
  • Human Ovum - Detail Explanation with Diagram - GeeksforGeeks
    Ovum is known as an egg cell which is the largest cell in the human body It is one of the cells apart from sperm from which a new life is formed An ovum is produced from the ovaries of women and is then released into the fallopian tubes Fallopian tubes are a muscular hollow organ which are of average between 10 and 14 cm in length Ovum also called ova is fertilized by sperm to produce a
  • OVUM Definition Meaning - Merriam-Webster
    The meaning of OVUM is a female gamete : macrogamete —called also egg cell





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