What does aerenchym or aerenchyma mean?
The definition of aerenchym and aerenchyma
{ A”ër*en`chym, A`ër*en”chy*ma }, n. [NL. aërenchyma. See Aëro-; Enchyma.] (Bot.)
A secondary respiratory tissue or modified periderm, found in many aquatic plants and distinguished by the large intercellular spaces.