Unstacked

Unstacked is an English adjective meaning not arranged in a stack. It describes objects or layouts that are laid out singly or in a loose arrangement rather than piled on top of one another. The term emphasizes the absence of a stacked configuration rather than any specific pattern of organization.

In logistics and warehousing, unstacked storage denotes goods that are not stacked on pallets or shelves. This can affect space efficiency, accessibility, and safety, particularly for heavy, fragile, or irregularly shaped items. Unstacked arrangements are common during loading, unloading, inventory checks, or when items are moved individually.

In everyday usage, unstacked may describe shelves, crates, or displays where items are kept separate rather than in stacks. The opposite concept is stacked or palletized storage, which is often chosen to maximize space or simplify bulk handling.

In computing or data contexts, unstacked is rare and informal. It may be used to describe data or structures that are not implemented as a stack, but there is no widely adopted technical meaning.

Etymology and related forms: formed from un- and stacked; related terms include unstack, unstacking, and unstacked.