Hy·​dro·​dic·​ty·​on | \-ˈdiktēˌän\

Definition of Hydrodictyon 

: a genus (the type of the family Hydrodictyaceae) of unicellular freshwater green algae of the order Chlorococcales that associate in colonies of cylindrical multinucleate cells joined by their ends into pentagonal meshes which are linked in a continuous elongate saccular network often reaching a length of 20 centimeters

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History and Etymology for Hydrodictyon

New Latin, from hydr- + Greek diktyon net, from dikein to throw

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to enclose within walls

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