tightlidded

Tightlidded is an adjective describing containers with lids that fit tightly and seal securely, preventing spillage, evaporation, or contamination. The term is frequently used in contexts such as food storage, pharmaceuticals, cosmetics, and laboratory ware, where maintaining the integrity of contents is important. A tight lid can reduce exposure to air, moisture, pests, and odors.

Standard spelling is tight-lidded with a hyphen, though some texts occasionally render it as tightlidded without a hyphen. The construction combines tight (as an adjective) with lid and the past participle suffix -ed. In practice, tight-lidded containers are associated with airtight or near-airtight seals, but a truly airtight seal depends on lid design, gasket, and container tolerances.

In everyday use, writers may describe jars, canisters, bottles, or boxes as tight-lidded to emphasize their secure closure and ability to preserve contents. In scientific or culinary writing, the term helps convey the requirement for closed systems to minimize moisture exchange, contamination, or oxidation. See also: air-tight, seal, closure, container.