English
immunogold
From immuno- + gold.
Proto-Indo-European *ǵʰelh₃- ‘green, yellow’
…
Proto-Germanic *gulþą ‘gold’
Proto-West Germanic *golþ
Old English gold ‘gold’
Middle English gold ‘gold’
English gold
Today it means
noun A particle of gold that is used to label an antibody or protein in immunogold electron microscopy.
Language periods are conventional ranges, not dates for this word.
Etymograph / immunogold