fixed-pressure
|fixed-pressure|
🇺🇸
/ˌfɪkstˈprɛʃɚ/
🇬🇧
/ˌfɪkstˈprɛʃə/
pressure kept constant
Etymology
'fixed-pressure' originates from English, specifically from the words 'fixed' and 'pressure', where 'fixed' comes from (or ultimately via) Latin 'fixus' meaning 'fastened, made firm' and 'pressure' ultimately comes from Latin 'pressura' (from 'premere') meaning 'the act of pressing or force per unit area'.
'fixed' developed in English via Old French/Latin influence from Latin 'figere'/'fixus' (through Old French 'fixe') and Middle English forms such as 'fixen' yielding the past form 'fixed'; 'pressure' entered English via Old French 'pression' from Latin 'pressura' (from 'premere'), and the two words have been combined in modern English as the compound 'fixed-pressure'.
Initially, components had meanings related to 'made firm' ('fixed') and 'the act of pressing' ('pressure'); over time the compound came to be used in technical English to mean 'pressure held constant' rather than the literal senses of its parts.
Meanings by Part of Speech
Noun 1
a pressure value or condition that is held constant in a system (the state of being at a fixed pressure).
The apparatus maintained a fixed-pressure of 2 atm during the experiment.
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Adjective 1
subject to, maintained at, or measured under a constant (unchanging) pressure; not varying in pressure (often used in technical or scientific contexts).
The laboratory used a fixed-pressure chamber to study gas behavior.
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Last updated: 2025/10/12 17:14