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 (ā-stŏm′ə-təs, ā-stō′mə-) also as·tom·ous (ăs′tə-məs) or a·stom·a·tal (ā-stŏm′ə-təl, ā-stō′mə-)
Having no mouth or oral opening.
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.


(æˈstɒmətəs; -ˈstəʊ-) ,




1. (Zoology) (of animals) having no mouth
2. (Botany) (of plants) having no stomata
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(eɪˈstɒm ə təs, eɪˈstoʊ mə-)

having no mouth, stoma, or stomata.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.astomatous - having no mouth or mouthlike openingastomatous - having no mouth or mouthlike opening
biological science, biology - the science that studies living organisms
stomatous - having a mouth or mouthlike opening
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
Two other atresic buffalo are reported from the Ouachita River drainage, Louisiana, but precise locality data and disposition of specimens are unknown: an astomous specimen was collected from the Ouachita River in 1985 and observed alive by the junior author, and a microstomatous individual was netted by a fisherman from Bayou Bartholomew (Anonymous 1989).