n.
A spongy tissue with large air spaces found between the cells of the stems and leaves of aquatic plants, providing buoyancy and allowing the circulation of gases.
[New Latin : aer(o)- + Greek enkhuma, filling (from enkhein, to pour in : en-, in; see en-2 + khein, to pour; see chyme).]
![[P]](http://cache.lexico.com/g/d/premium_mh.gif){kind=small}
