1. Noun
One of the minute apertures between the cells in many serous membranes.
2. Noun
The minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells.
3. Noun
The line of dehiscence of the sporangium of a fern. It is usually marked by two transversely elongated cells. See Illust. of Sporangium.
4. Noun
A stigma. See Stigma, n., 6 (a) & (b).
5. Noun
a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
Vocabulary classified under Nature and environment
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