Dictionary.com
Thesaurus.com

pleustonic

British  
/ pluːˈstɒnɪk /

adjective

  1. of or relating to pleuston

  2. denoting a marine organism held at the surface of the water by a float, such as the Portuguese man-of-war

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training