- Aperture in a plant
- Leaf opening
- Leaf pore
- Small hole in plant leaf
- One of the minute apertures between the cells in many serous
membranes.
- The minute breathing pores of leaves or other organs opening
into the intercellular spaces, and usually bordered by two contractile
cells.
- The line of dehiscence of the sporangium of a fern. It is
usually marked by two transversely elongated cells. See Illust. of
Sporangium.