English
fieldmeter
From field + -meter.
Formed from field + -meter
Proto-Germanic *felþuz ‘field’
Proto-West Germanic *felþu ‘field’
Old English feld ‘field’
Middle English feld ‘field’
English field
Today it means
noun An instrument for measuring the magnetic field.
Language periods are conventional ranges, not dates for this word.
Etymograph / fieldmeter