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Related to ostioles: perithecium, Horta, stroma


A small opening or pore, as of a fruiting body.

[Latin ōstiolum, diminutive of ōstium, opening; see ostium.]

os′ti·o′lar (ŏs′tē-ō′lər, ŏ-stī′ə-) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Botany) the pore in the reproductive bodies of certain algae and fungi through which spores pass
2. (Biology) any small pore
[C19: from Latin ostiolum, diminutive of ostium door]
ostiolar, ˈostioˌlate adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈɒs tiˌoʊl)

an opening or pore.
[1825–35; < Latin ōstiolum little door, diminutive of ōstium door]
os•ti•o•lar (ˈɒs ti ə lər, ɒˈstaɪ-) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ostiole - a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass
pore - any small opening in the skin or outer surface of an animal
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References in periodicals archive ?
This section grouped species with (a) carbonized stromata, (b) conical-papillate ostioles surrounded or not by a discoid area, (c) smooth ascospores usually with dehiscent perispore but with a thickening of 1/3 of the length of the ascospores and (d) nodulisporium-like anamorphs.
For inoculation mycelial plugs of 5mm diameter isolated from a 7-days-old single spore culture were placed onto the ostioles opening, at the equatorial region of the immature fruit with and without wound (11 fruits per treatment).
Lateral margins of pronotum completely dentate except humeral angles, dentine on posterior portion slightly less prominent, anterior angles acutely produced but not extending beyond eyes, humeral angles quite acute; length of pronotum 4.0 mm, width 10.0 mm; scutellum reaching to fifth abdominal tergum, with u-shaped apical lobe, subacute at apex; length of scutellum 8.6 mm, and width at base 5.8 mm; metathoracic scent gland ostioles (Fig.
After they were dried, the spores were released from the ostioles in the form of a black dust on the culture media.
Ascomata, however, have slightly papillate ostioles and Alternaria-like asexual morphs, and recent molecular data shows that Clathrospora has an affinity with the family Pleosporaceae [4, 14].