In Glasners Averroes' Physics he writes:
The Arabs [Islamic Philosophers or Falsafa] were well familiar with Stoic logic, as well as with the basic ideas of Stoic philosophy. They learned about the Stoic school mainly from secondary sources and referred to them as ‘the pneumatics’ (ruhaiyyun).
This seems an odd choice of nomenclature. From my superficial knowledge of Stoic philosophy there doesn't appear to be a characteristic of stoic philosophy that this name is honouring.
Is there something I'm missing?