Shortfill

Part of speech: noun

Definitions

1. A container or bottle partially filled with a base liquid, such as nicotine-free e-liquid or flavor concentrate, intended for mixing with other substances to reach a desired volume or strength
2. A partially filled vessel designed to hold a starter amount of a liquid formulation that requires dilution or topping up before use or consumption
3. An incompletely filled receptacle commonly used in vaping or mixing contexts to hold a base solution that users combine with additives to customize flavor or concentration

Etymology: "Shortfill" is a plain English compound: "short," meaning not quite full, plus "fill," meaning a quantity needed to fill something. The "fill" half comes from Old English "fyllan," which is related to "full," so the word is an old pairing of two very common roots. The "short" half is the older sense of the adjective, used in phrases like "short of money" to mean lacking or not quite reaching a measure. In its common modern use, the term appears in the retail and fuel trades, where a container is sold or delivered with less than the stated volume. Its origin is transparent, so there is no hidden story, but the compound shows how English builds a precise technical noun from two everyday words.