English
timelike
From time + -like.
A compound of time + -like
Proto-Indo-European *deh₂y- ‘to divide’
…
Proto-Germanic *tīmô ‘division, period; time’
Proto-West Germanic *tīmō
Old English tīma ‘time, period’
Middle English tyme
English time
Today it means
adj Of a four-vector in representing a point in spacetime, having a positive or negative four-vector norm for the metric signature (+, -, -, -) and (-, +, +, +) respectively.
Language periods are conventional ranges, not dates for this word.
Etymograph / timelike