English
gridpoint
From grid + point.
Proto-Indo-European *pewǵ- ‘to prick, punch’
…
Latin pungō ‘to prick; to puncture’
Latin pūnctum ‘point; puncture’
Old French point ‘dot’
Middle English poynt ‘small hole’
English point
Today it means
noun Any point in the Cartesian plane with integer coordinates.
Language periods are conventional ranges, not dates for this word.
Etymograph / gridpoint