Definition of ovum in English:

ovum

nounPlural ova ˈəʊvəmˈoʊvəm

Biology

A mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell.
〔生〕（尤指人或其他动物的）卵；卵细胞
the ovum contributes one chromosome of each pair to the fertilized cell
Example sentencesExamples
- An ovum (plural ova) is a mature egg released at ovulation.
- As in most other animals, the sperm mitochondria penetrate the cell membrane of the ovum at fertilization.
- The ovaries perform both an exocrine function by producing ova and an endocrine function by producing estrogen and progesterone.
- There are a few exceptions to this pattern, most famously in seahorses where females have an ovipositor which places unfertilized ova into the male's pouch for insemination.
- When a human sperm fertilizes a human ovum, a single cell is created with the potential to grow into a human person.

Origin

Early 18th century: from Latin, literally 'egg'.

Definition of ovum in US English:

ovum

nounˈōvəmˈoʊvəm

Biology

A mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell.
〔生〕（尤指人或其他动物的）卵；卵细胞
the ovum contributes one chromosome of each pair to the fertilized cell
Example sentencesExamples
- There are a few exceptions to this pattern, most famously in seahorses where females have an ovipositor which places unfertilized ova into the male's pouch for insemination.
- An ovum (plural ova) is a mature egg released at ovulation.
- The ovaries perform both an exocrine function by producing ova and an endocrine function by producing estrogen and progesterone.
- As in most other animals, the sperm mitochondria penetrate the cell membrane of the ovum at fertilization.
- When a human sperm fertilizes a human ovum, a single cell is created with the potential to grow into a human person.

Origin

Early 18th century: from Latin, literally ‘egg’.

词汇	ovum
释义	Definition of ovum in English: ovum nounPlural ova ˈəʊvəmˈoʊvəm Biology A mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell. 〔生〕（尤指人或其他动物的）卵；卵细胞 the ovum contributes one chromosome of each pair to the fertilized cell Example sentencesExamples An ovum (plural ova) is a mature egg released at ovulation. As in most other animals, the sperm mitochondria penetrate the cell membrane of the ovum at fertilization. The ovaries perform both an exocrine function by producing ova and an endocrine function by producing estrogen and progesterone. There are a few exceptions to this pattern, most famously in seahorses where females have an ovipositor which places unfertilized ova into the male's pouch for insemination. When a human sperm fertilizes a human ovum, a single cell is created with the potential to grow into a human person. Origin Early 18th century: from Latin, literally 'egg'. Definition of ovum in US English: ovum nounˈōvəmˈoʊvəm Biology A mature female reproductive cell, especially of a human or other animal, which can divide to give rise to an embryo usually only after fertilization by a male cell. 〔生〕（尤指人或其他动物的）卵；卵细胞 the ovum contributes one chromosome of each pair to the fertilized cell Example sentencesExamples There are a few exceptions to this pattern, most famously in seahorses where females have an ovipositor which places unfertilized ova into the male's pouch for insemination. An ovum (plural ova) is a mature egg released at ovulation. The ovaries perform both an exocrine function by producing ova and an endocrine function by producing estrogen and progesterone. As in most other animals, the sperm mitochondria penetrate the cell membrane of the ovum at fertilization. When a human sperm fertilizes a human ovum, a single cell is created with the potential to grow into a human person. Origin Early 18th century: from Latin, literally ‘egg’.
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