Spinduli

Spinduli is a term used in speculative fiction to denote a crystalline material or energy concept, depending on the work. In many depictions, spinduli crystals are slender, spindle-shaped structures that emit light and respond to magnetic fields. The material is described as lightweight yet strong, with the ability to absorb, store, or channel various forms of energy. Its luminescence is often variable, changing with ambient conditions such as temperature, pressure, or electromagnetic exposure.

Manufacture and sources vary across universes. Some stories present spinduli as a naturally occurring deposit formed in high-temperature volcanic regions, while others describe it as an engineered alloy produced in specialized refineries or through arcane-technological synthesis. The material may occur in pure crystalline forms, as composite strands, or as infused cores embedded in devices.

Applications commonly include power storage for compact drives, energy components in weapons, and parts for sensors or displays. In certain narratives, spinduli also carries purported mystical properties that enable protective wards, enhanced perception, or cognitive augmentation, depending on the cultural or technological context.

Etymology and usage are typically defined within each universe, with the name treated as a proper noun. Some authors link spinduli to a blend of terms such as "spindle" and "dynamo," while others refrain from offering a specific origin.

See also: luminite, crystal energy, worldbuilding materials.