Grammban

Grammban is a fictional unit of mass used in speculative fiction and worldbuilding to describe quantities in a system distinct from real-world metrics. It appears in narratives and reference materials as part of the Grammban System, a hypothetical measurement framework intended to convey unfamiliar or advanced settings without relying on standard SI units.

Etymology and design considerations are central to the term. The name blends the familiar word gram with a constructed suffix common in invented languages and systems. Across works, the grammban may be treated as the base unit of mass or as a convenient subunit, but there is no universal standard. Authors define its value to suit their world, sometimes mapping one grammban to a range around a real gram, a microgram, or a larger mass, depending on narrative needs and technological level.

Usage and scope in fiction vary. Writers employ grammbans to describe cargo, equipment, medicine, or food, often alongside adapted prefixes such as milli-, centi-, or kilo-grammban to convey scale. The unit can help establish cultural or economic differences in measurement practices, indicating how a society handles weight, trade, and logistics in a way that feels plausible within the story world.

Reception and practice in real-world communities: In worldbuilding and speculative-fiction circles, grammban examples are discussed to illustrate internal consistency and plausibility. Glossaries and fan wics frequently include definitions and conversion notes to aid readers and writers in maintaining coherence across a fictional universe.