English
invigilatrix
Formed as invigilate + -trix, after invigilator.
Formed from invigilate + -trix
Proto-Indo-European *weǵ- ‘to be lively, awake’
…
Latin vigil ‘awake, watching, alert’
Latin vigilō ‘to watch through, spend in watching, do or…’
Latin invigilō ‘to stay awake, watch over’
Latin invigilātus ‘having been watched over’
English invigilate
The story
Formed as invigilate + -trix, after invigilator.
Today it means
noun A woman (or entity given female personification) who invigilates; a female invigilator.
Language periods are conventional ranges, not dates for this word.
Etymograph / invigilatrix