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n. pl. sto·ma·ta (-mə-tə) or sto·mas
1. Botany One of the minute pores in the epidermis of a leaf or stem through which gases and water vapor pass. Also called stomate.
2. Anatomy A small aperture in the surface of a membrane.
3. A surgically constructed opening, especially one in the abdominal wall that permits the passage of waste after a colostomy or ileostomy.
4. Zoology A mouthlike opening, such as the oral cavity of a nematode.

[New Latin, from Greek, mouth.]

sto′mal, sto′ma·tal 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.


(ˈstəʊmətəl; ˈstɒm-) or


of, relating to, or possessing stomata or a stoma
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈstɒm ə tl, ˈstoʊ mə-)

1. of, pertaining to, or of the nature of a stoma.
2. having 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.stomatal - relating to or of the nature of or having a mouth or mouthlike opening
2.stomatal - relating to or constituting plant stomata; "stomatal openings"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
Distinctive differences in response to drought stress have also been recognized for a range of physiological characteristics, including reduced photosynthesis, stomatal activity, transpiration rate, and osmotic adjustment in the whole plant (Anjum et al., 2011).
Stomatal density, leaf area and plant size variation of Rhizophora mangle (Malpighiales: Rhizophoraceae) along a salinity gradient in the Mexican Caribbean
These factors are photosynthetic pigments, stomatal performance and generation of essential metabolites and antioxidants (Aziz et al., 2013; Nusrat et al., 2014).
Determination of the components of leaves (stomata, trichomes, and stomatal index) were carried out under a microscope.
Research on photosynthesis (A) and stomatal function in grain sorghum has not been as extensive as with other crops.
Measurement of leaf stomatal conductance was performed for each time point (n = 6) using SC-1 leaf porometer (Decagon, USA).
Transpiration rate ([micro]mol [H.sub.2]O [m.sup.-2] [s.sup.-1]), Stomatal conductance (mmol [m.sup.-2][S.sup.-1]) and Leaf temperature ([degrees]C)
The main concomitants of drought in crop plants are reduced rate of stem elongation and root proliferation, cell division and enlargement, leaf size and disturbed plant water and nutrient relations and stomatal fluctuations with reduced crop productivity and water use efficiency (WUE).
In addition, net photosynthesis, stomatal conductance, transpiration and leaf area of selected H.
Leaf mass per area, stomatal density, stomatal length, water content, leaf life span, and chlorophyll content were measured in two populations in northern Indiana.
Stomatal density (SD, stomata [mm.sup.-2]) and guard cell length were measured from nail varnish impressions (n = 20 leaves) of the inferior lamina (Galmes & al., 2007) each of them 0.5 x 1.0 cm, obtained by a Zeiss Axiocam MRc 5 digital camera (Carl Zeiss), with Axiovision AC software.