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micropyle
This term is a specialized botanical and biological descriptor used almost exclusively in academic, scientific, or technical contexts. It describes a specific anatomical feature of an ovule, and as such, it does not have a casual or metaphorical equivalent in everyday English.
Because it refers to a specific biological structure, the word is used as a countable noun in scientific descriptions when discussing different species or multiple ovules, though it often appears in the singular when describing the general mechanism of fertilization.
Meanings
Examples
The pollen tube grows through the style and enters the ovule via the micropyle.
Look closely at the diagram to see where the micropyle is located on the seed.
Water enters the seed through the micropyle to trigger germination.
Is the micropyle always positioned at the top of the ovule?
The micropyle serves as the primary gateway for male gametes to reach the egg cell.
I wonder if this specific plant species has a modified micropyle structure.
The integuments fuse to leave only a small opening called the micropyle.
Without a functional micropyle, fertilization of the ovule cannot occur.
Without a functional micropyle, fertilization of the ovule cannot occur.
The researcher observed the pollen tube penetrating the micropyle under a microscope.
The researcher observed the pollen tube penetrating the micropyle under a microscope.