noun, noun or participle which takes 'suru', transitive verb, intransitive verb
hermetic sealing; tight stopper
Refers to sealing a container so that nothing can enter or escape; used both as a noun and as a suru-verb. Common in technical, laboratory, and food-preservation contexts.
試料を密栓して冷暗所に保存する。
Seal the sample tightly and store it in a cool, dark place.
この瓶は密栓がしっかり
This bottle has a tight seal.