Etymograph

English

isopoint

iso- + point

Formed from iso- + point

Ancient Greek ἴσος ‘equal’

English iso-

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 The most recent point in a given population's past such that each individual alive at that point either has no living descendants, or is the ancestor of every individual alive in the present.

Language periods are conventional ranges, not dates for this word.

Etymograph / isopoint

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