Meanings
nounNeptune grass (usually uncountable, plural Neptune grasses)
plural Neptune grasses
- uncountableusuallyPosidonia oceanica, a seagrass native to the Mediterranean.
Origin
From Neptune (the Roman sea god, because it grows in the sea) + grass (from seagrass).
Full word history & related roots →Rhymes & wordplay
Rhymes with Neptune grass
classgasglasspassmassbassbrassgrassdasHamaslacalasmadrasdasssurpasslassharassAlsacesasscrasstasssaaschasseamass
All rhymes →Cite this entry
APA
Neptune grass. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Neptune%20grass
MLA
“Neptune grass.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Neptune%20grass. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Neptune grass,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Neptune%20grass.
Source: Neptune grass on Wiktionary, CC BY-SA 4.0.