English
serotherapy
From sero- + therapy.
Proto-Indo-European *ser- ‘to flow, run’
Proto-Indo-European *sér-o- ‘flowing, liquid’
Proto-Italic *serom ‘liquid’
Latin serum ‘some other watery liquid’
English sero-
Ancient Greek θεράπων ‘attendant, aide’
Ancient Greek θεραπεύω ‘to serve, treat medically’
Ancient Greek θεραπεία ‘service, medical treatment’
New Latin therapīa ‘therapy’
English therapy
Today it means
noun The therapeutic use of sera or vaccines.
Sources
Sources: Wiktionary, “serotherapy”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / serotherapy