Source : Webster's Revised Unabridged Dictionary (1913)

Zostera \Zos"te*ra\, n. [NL.] (Bot.)
   A genus of plants of the {Naiadace[ae]}, or Pondweed family.
   {Zostera marina} is commonly known as {sea wrack}, and
   {eelgrass}.

Source : WordNet®

Naiadaceae
     n : monotypic family of aquatic plants having narrow leaves and
         small flowers [syn: {family Naiadaceae}, {Najadaceae}, {family
         Najadaceae}, {naiad family}]