Where does “plenamar” come from?

plenamar (Spanish) comes from Spanish mar, from Old Spanish mar, from Latin mare, from Proto-Italic mari, from Proto-Indo-European móri, from Proto-Indo-European mer- — to die; to disappear; sea, lake, wetland.

Ancestry of “plenamar”, step by step

plenamar traces back through two separate lines of ancestry.

via Spanish mar

StepLanguageWordMeaning
1Spanishmarsea; seaside; lunar mare
2Old Spanishmar
3Latinmaresea; ablative singular of mās
4Proto-Italicmarisea
5Proto-Indo-Europeanmórisea; standing water
6Proto-Indo-Europeanmer-to die; to disappear; sea, lake, wetland

via Spanish plena

StepLanguageWordMeaning
1Spanishplenafeminine singular of pleno; a plain, pl. plains;...
2Frenchplainefeminine singular of plain; plain
3Latinplēnum
Every word from Proto-Indo-European mer-