plas·mo·des·ma 
(plăz′mə-dĕzmə) also plas·mo·desm (plăzmə-dĕz′əm)
(plăz′mə-dĕzmə) also plas·mo·desm (plăzmə-dĕz′əm)n. pl. plas·mo·des·ma·ta (-mə-tə) or plas·mo·des·mas also plas·mo·desms
A strand of cytoplasm that passes through openings in cell walls and connects the protoplasts of adjacent living plant cells.
[PLASMO- + Greek desma, bond (from dein, to bind).]