English
estrogel
Blend of estrogen + gel, equivalent to estro + gel.
Proto-Indo-European *gel- ‘cold’
…
Italian gelare ‘to freeze, to chill, to frost’
Italian gelatina ‘gelatin’
French gélatine
English gelatin
English gel
Today it means
noun Estradiol gel used in feminizing hormone replacement therapy.
Language periods are conventional ranges, not dates for this word.
Etymograph / estrogel