airtight bag
- noun
- /ˈɛərtaɪt bæg/
:
bolsa hermética
- To preserve freshness, keep the vegetables in an airtight bag after washing.
Examples
-
The fresh salmon are first packed in a moist, airtight bag instead of being packed in ice.
Academic text (1990) -
Here's the key: after washing and drying, bag items in sealed, airtight bags, and do not remove them until use.
Blog text (3) -
But a thousand armspans underground, you could have disposed of the body in any number of places: putting it in an airtight bag to keep its smell from escaping, then throwing it down a fissure, burying it under loose rock, or tossing it into a rock-grinding machine.
Fiction book (2002) -
You should store the leftover food in an airtight bag to prevent it from going stale.
-
For best results, seal the snacks in an airtight bag before placing them in the pantry.
Synonyms
A sealed container with no air inside that keeps things fresh
A plastic bag you seal and take the air out of to keep food or clothes fresh
How Airtight
Surface Forms
Morphology
The meaning 'a bag designed to prevent air from entering or escaping' is directly and transparently derived from combining 'airtight' (sealed against airflow) with 'bag' (a container). This adjective + noun composition is literal, non-idiomatic, and cross-linguistically common, so a B1 learner who knows the constituents will understand it.
Etymology
Airtight bag comes from the simple image of a bag that is truly airtight. It keeps air out so food or things stay fresh and safe, and that's why it means 'a bag that stops air from entering or leaving'.
