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Pronunciation varies by accent · noun
(botany, histology) A group of cells with spiral secondary wall thickenings, present in a velamen; acts as an airway for gas exchange for respiration or photosynthesis.
The roots of palms are characterised by pneumatodes on both underground and aerial roots. These have been supposed to ventilate the underground roots, but direct physiological evidence for this is lacking.
Use pneumatode when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pneumatode means (botany, histology) A group of cells with spiral secondary wall thickenings, present in a velamen; acts as an airway for gas exchange for respiration or photosynthesis.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
The roots of palms are characterised by pneumatodes on both underground and aerial roots. These have been supposed to ventilate the underground roots, but direct physiological evidence for this is lacking.
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