Adjective
Resembling a point
(physics) Having dimensions too small to be measured, or so small that it may be regarded as a point
Source: en.wiktionary.orgThe calculation assumes that the quarks behave like pointlike Dirac particles, each having their own magnetic moment. Source: Internet
This was established by Einstein, Infeld, and Hoffmann for pointlike objects without angular momentum, and by Roy Kerr for spinning objects. Source: Internet