| Webster's Online Dictionary |
| Expressions | Definition | ||
| Hermetically sealed | The term hermetically sealed is used to describe something that has an airtight seal. The term is often used to describe electronic parts that are designed and intended to be secure against the entry of microorganisms and to maintain the safety and quality of their contents. Applications include thermostats, optical devices, switches, and other devices. The food, chemical, and medical industries all have applications for the use of such "airtight" packaging, as well. High-end coffins, too, are often made to be "hermetically sealed," and must be of metal, or of other material with metal lining, and constructed so that when closed and fastened the coffin is completely airtight. (references) | ||
Source: compiled by the editor from various references; see credits. | Top | ||
| Expressions | Domain | Definition | |
| Hermetically sealed | Energy | Closed by fusion, gasketing, crimping, or equivalent means so that no gas or vapor can enter or escape. (references) | |
| Hermetically sealed | Literature | Closed securely. Thus we say, "My lips are hermetically sealed," meaning so as not to utter a word of what has been imparted. The French say close-fitting doors and windows "shut hermetically." When chemists want to preserve anything from the air, they heat the neck of the vessel till it is soft, and then twist it till the aperture is closed up. This is called sealing the vessel hermetically, or like a chemist. (From Herms, called Trismegistus, or thrice-great, the supposed inventor of chemistry.). Source: Brewer's Dictionary. | |
| Hermetically sealed compressor unit | Physics | A compressor directly couplet to an electric motor and contained within a gas-tight welded casing. Source: European Union. (references) | |
| Hermetically sealed condensing unit | Physics | A condensing unit in which the motor plus compressor are hermetically sealed. Source: European Union. (references) | |
| Hermetically sealed container | Engineering & Technology | Container which, when sealed, is intended to protect the contents against the entry of micro-organisms during and after heat treatment and which is impervious. Source: European Union. (references) | |
| Hermetically sealed container | Health | A container which is designed and intended to be secure against the entry of microorganisms and to maintain the commercial sterility of its contents after processing. For example, a tin, steel or aluminum can; glass jar; bottle; or pouch. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
