English
immunoplaque
From immuno- + plaque (“clearing”).
Formed from immuno- + plaque ‘clearing’
Proto-Germanic *plaggą ‘patch’
Old Dutch *plagga ‘patch’
Middle Dutch placken ‘to patch, beat metal into a thin plate’
French plaquer ‘to plate’
French plaque ‘plate, sheet (of metal)’
English plaque
Today it means
noun A technique that uses filter paper to assay the presence of antibodies
Language periods are conventional ranges, not dates for this word.
Etymograph / immunoplaque