Engineering English
Cavity
Manufacturing Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: The cavity is the hollow space within a mold that shapes the molten plastic into the final product. It is the negative impression of the part.
Example in context
“The technician polished the cavity surface to achieve a high-gloss finish on the molded plastic component.”
“Teknisyen, kalıplanmış plastik bileşende yüksek parlaklıkta bir yüzey elde etmek için boşluk yüzeyini cilaladı.”
Where engineers use it
The cavity geometry determines the final part shape. Engineers inspect cavity surfaces for wear or damage that could cause defects like sink marks or sticking.
Synonyms: mold cavity, impression
Antonyms: core
Practice: can you use “Cavity” at work?
A molded part shows a rough surface texture. You must investigate whether the cavity surface needs polishing or if the molding parameters are at fault.
Show a model answer
“Ensure the cavity is clean and free of scratches before the production run.”
“Cavity” in 21 languages
| English | Cavity |
|---|---|
| Turkish | boşluk |
| French | cavité |
| German | Kavität |
| Spanish | cavidad |
| Chinese | 型腔 |
| Arabic | تجويف |
| Portuguese | cavidade |
| Russian | полость |
| Japanese | キャビティ |
| Italian | cavità |
| Vietnamese | khoang |
| Hindi | गुहा |
| Thai | โพรง |
| Indonesian | rongga |
| Korean | 캐비티 |
| Bengali | গহ্বর |
| Dutch | holte |
| Swedish | kavitet |
| Finnish | ontelo |
| Ukrainian | порожнина |
Frequently asked questions
What does Cavity mean in engineering?
The cavity is the hollow space within a mold that shapes the molten plastic into the final product. It is the negative impression of the part. In Manufacturing Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Cavity?
Cavity is pronounced /ˈkævɪti/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Cavity used in a sentence?
Example from an engineering context: “The technician polished the cavity surface to achieve a high-gloss finish on the molded plastic component.”
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