- 1. n. The exterior opening of a stomate. See Stomate. Source: opted
- 2. n. Any small orifice. Source: opted
- 3. n. a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass Source: wordnet
- 4. (a) The exterior opening of a stomate. See Stomate. (b) Any small orifice. Source: webster
- 5. n. a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass Source: ecdict
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ostiole
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