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stoma

sto·ma

stoma

 
pronunciation:
sto m
features:
Word Combinations (noun)
part of speech: noun
inflections: stomas, stomata
definition 1: any of various microscopic openings in the epidermis of a leaf or stem through which gases and water vapor are exchanged.
definition 2: a mouthlike opening, esp. an ingestive opening, as on certain worms.
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