Found 2 items, similar to planktonic.
English → English (WordNet)
Definition: planktonic
planktonic
adj : of or relating to plankton
English → English (gcide)
Definition: Planktonic
Plankton
\Plank"ton\ (pl[a^][ng]k"t[o^]n), n. [NL., fr. Gr.
plagto`n, neut. of plagto`s wandering, pla`zesqai to wander.]
(Biol.)
All the animals and plants, taken collectively, which live at
or near the surface of salt or fresh waters. --
Plank*ton"ic, a.
[Webster 1913 Suppl.]