(mathematics) The asymptotical counterpart of a ball (inside surface of a sphere)

The formation of clusters; clustering

(historical) An ancient unit of quantity, 72 sheets of parchment.

(organic chemistry) A toxic, antifungal lactone (6R)-6-(hydroxymethyl)-6-undecyltetrahydro-2H-pyran-2-one present in cyanobacteria of the genus Lyngbyamajuscula