Wiktionary
pointlike
a. 1 Resembling a point 2 (context physics English) Having dimensions too small to be measured, or so small that it may be regarded as a point alt. 1 Resembling a point 2 (context physics English) Having dimensions too small to be measured, or so small that it may be regarded as a point
Usage examples of "pointlike".
Because we previously envisioned all matter particles and all force particles to be pointlike objects with literally no spatial extent, we were obligated to consider properties of the universe on arbitrarily short distance scales.