Definition of micropyle in English:

micropyle

noun ˈmʌɪkrə(ʊ)pʌɪlˈmaɪkrəˌpaɪl

Botany

1A small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed.
〔植〕珠孔
Example sentencesExamples
- It remains to be studied exactly how the pollen tubes reach the micropyle of the ovules.
- However, pollen tubes from control pollen showed normal morphology when growing towards the micropyle of an ovule in a HTS plant.
- Only one pollen tube tip entered the nucellus through the micropyle.
- Within the ovary, pollen tubes also grew in the ECM to penetrate the micropyle and subsequently grew intercellularly within the nucellus up to the embryo sac.
- The ovule micropyle and embryo sac were penetrated equally by cross- and self-pollen tubes.
1. 1.1Zoology A small opening in the egg of a fish, insect, etc., through which spermatozoa can enter.
  卵孔
  Example sentencesExamples
  Sperm enter the anterior end of the egg through the micropyle.
  Coupling these screens with a visual assessment of seed formation has yielded mutants defective in FG development or in the ability of pollen tubes to release their sperm after entering the micropyle.
  In a favorable situation, an opening called the micropyle appears and releases amoebocytes, which differentiate into cells of all the other types.
  Each cupule is recurved, has a lip-like projection near the point of attachment, and contains several ovules arranged in a curved row with their micropyles facing the cupule opening.

Origin

Early 19th century: from micro- 'small' + Greek pulē 'gate'.

Definition of micropyle in US English:

micropyle

nounˈmaɪkrəˌpaɪlˈmīkrəˌpīl

Botany

1A small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed.
〔植〕珠孔
Example sentencesExamples
- Only one pollen tube tip entered the nucellus through the micropyle.
- It remains to be studied exactly how the pollen tubes reach the micropyle of the ovules.
- The ovule micropyle and embryo sac were penetrated equally by cross- and self-pollen tubes.
- However, pollen tubes from control pollen showed normal morphology when growing towards the micropyle of an ovule in a HTS plant.
- Within the ovary, pollen tubes also grew in the ECM to penetrate the micropyle and subsequently grew intercellularly within the nucellus up to the embryo sac.
1. 1.1Zoology A small opening in the egg of a fish, insect, etc., through which spermatozoa can enter.
  卵孔
  Example sentencesExamples
  Coupling these screens with a visual assessment of seed formation has yielded mutants defective in FG development or in the ability of pollen tubes to release their sperm after entering the micropyle.
  Sperm enter the anterior end of the egg through the micropyle.
  In a favorable situation, an opening called the micropyle appears and releases amoebocytes, which differentiate into cells of all the other types.
  Each cupule is recurved, has a lip-like projection near the point of attachment, and contains several ovules arranged in a curved row with their micropyles facing the cupule opening.

Origin

Early 19th century: from micro- ‘small’ + Greek pulē ‘gate’.

词汇	micropyle
释义	Definition of micropyle in English: micropyle noun ˈmʌɪkrə(ʊ)pʌɪlˈmaɪkrəˌpaɪl Botany 1A small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed. 〔植〕珠孔 Example sentencesExamples It remains to be studied exactly how the pollen tubes reach the micropyle of the ovules. However, pollen tubes from control pollen showed normal morphology when growing towards the micropyle of an ovule in a HTS plant. Only one pollen tube tip entered the nucellus through the micropyle. Within the ovary, pollen tubes also grew in the ECM to penetrate the micropyle and subsequently grew intercellularly within the nucellus up to the embryo sac. The ovule micropyle and embryo sac were penetrated equally by cross- and self-pollen tubes. 1.1Zoology A small opening in the egg of a fish, insect, etc., through which spermatozoa can enter. 卵孔 Example sentencesExamples Sperm enter the anterior end of the egg through the micropyle. Coupling these screens with a visual assessment of seed formation has yielded mutants defective in FG development or in the ability of pollen tubes to release their sperm after entering the micropyle. In a favorable situation, an opening called the micropyle appears and releases amoebocytes, which differentiate into cells of all the other types. Each cupule is recurved, has a lip-like projection near the point of attachment, and contains several ovules arranged in a curved row with their micropyles facing the cupule opening. Origin Early 19th century: from micro- 'small' + Greek pulē 'gate'. Definition of micropyle in US English: micropyle nounˈmaɪkrəˌpaɪlˈmīkrəˌpīl Botany 1A small opening in the surface of an ovule, through which the pollen tube penetrates, often visible as a small pore in the ripe seed. 〔植〕珠孔 Example sentencesExamples Only one pollen tube tip entered the nucellus through the micropyle. It remains to be studied exactly how the pollen tubes reach the micropyle of the ovules. The ovule micropyle and embryo sac were penetrated equally by cross- and self-pollen tubes. However, pollen tubes from control pollen showed normal morphology when growing towards the micropyle of an ovule in a HTS plant. Within the ovary, pollen tubes also grew in the ECM to penetrate the micropyle and subsequently grew intercellularly within the nucellus up to the embryo sac. 1.1Zoology A small opening in the egg of a fish, insect, etc., through which spermatozoa can enter. 卵孔 Example sentencesExamples Coupling these screens with a visual assessment of seed formation has yielded mutants defective in FG development or in the ability of pollen tubes to release their sperm after entering the micropyle. Sperm enter the anterior end of the egg through the micropyle. In a favorable situation, an opening called the micropyle appears and releases amoebocytes, which differentiate into cells of all the other types. Each cupule is recurved, has a lip-like projection near the point of attachment, and contains several ovules arranged in a curved row with their micropyles facing the cupule opening. Origin Early 19th century: from micro- ‘small’ + Greek pulē ‘gate’.
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