Neuter

serum

Pronounced as (IPA)

[ˈsɛ.rũː]

From Proto-Italic *serom (“liquid”), from Proto-Indo-European *sér-o- (“flowing, liquid”), from *ser- (“to flow, run”); cognate with Sanskrit सर (sará, “flowing”), सार (sā́ra, “curd, cream”), सारण (sāraṇa, “flowing, buttermilk”), and Ancient Greek ὀρός (orós, “whey, curd, semen”).