Proto-Indo-European

*sér-o-

‘flowing, liquid’

Every word has its own definition in its root. These English words share one: Proto-Indo-European *sér-o-.

4 English words in this record descend from Proto-Indo-European *sér-o-, most familiar first.

• serum ← *serom
• serous ← séreux ← serosus ← serum ← *serom
• suero ← *sorum ← serum ← *serom
• serac ← sera ← seraceum ← serum ← *serom

Etymograph / Proto-Indo-European *sér-o-