ostiole
/ˈɑstiˌoʊl/
noun
- A small opening or pore, especially in a plant or fungus, through which substances pass.
- The scientist examined the ostiole to see how the plant exchanged gases.
- The ostiole of the fig allows tiny wasps to enter and pollinate the flowers.
- In some fungi, spores are released through an ostiole at the top of the fruiting body.