/ Thesaurus / P Synonyms of potamogeton americanus Find synonyms for: Noun1. loddon pondweed, Potamogeton nodosus, Potamogeton americanus, pondweedusage: pondweed with floating leaves; of northern United States and EuropeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language