foot-pound-second: meaning, definition, pronunciation and examples
C2Technical, Historical
Quick answer
What does “foot-pound-second” mean?
Denoting or relating to a system of measurement that uses the foot, the pound, and the second as its base units for length, mass, and time, respectively.
Audio
Pronunciation
Definition
Meaning and Definition
Denoting or relating to a system of measurement that uses the foot, the pound, and the second as its base units for length, mass, and time, respectively.
Often used as a descriptive adjective (foot-pound-second system) to distinguish from the metric (SI) system, particularly in engineering, physics, and historical contexts in the UK and US. It is a type of imperial system.
Dialectal Variation
British vs American Usage
Differences
The term is equally applicable historically to both British Imperial and US Customary units. In contemporary UK academic/technical contexts, 'Imperial units' is more common, while in the US, 'US Customary units' or 'English Engineering System' might be used, with 'foot-pound-second' serving as a precise technical descriptor.
Connotations
In both regions, it often connotes legacy systems, older textbooks, or specific engineering fields (e.g., aeronautics in the US). In the UK, it has a stronger association with pre-metrication history.
Frequency
Low frequency in general language but stable in specific technical/historical discourse. Slightly higher frequency in American engineering contexts where non-SI units persist.
Grammar
How to Use “foot-pound-second” in a Sentence
the foot-pound-second [SYSTEM]based on a foot-pound-second [FRAMEWORK]using foot-pound-second [UNITS]Vocabulary
Collocations
Examples
Examples of “foot-pound-second” in a Sentence
verb
British English
- Not applicable as a verb.
American English
- Not applicable as a verb.
adverb
British English
- Not applicable as an adverb.
American English
- Not applicable as an adverb.
adjective
British English
- The textbook presented the dynamics problem using foot-pound-second units.
- Britain officially moved away from the foot-pound-second system in 1965.
American English
- The aircraft's performance charts are still in foot-pound-second format.
- Many US engineering codes retain foot-pound-second specifications.
Usage
Meaning in Context
Business
Rare, except in specific import/export or manufacturing contexts dealing with legacy US/UK specifications.
Academic
Used in history of science, engineering, and physics textbooks, often in contrast to SI. More common in historical descriptions than current practice.
Everyday
Virtually never used.
Technical
Primary context. Used in engineering (especially mechanical, aerospace), physics, and metrology to specify the unit system being used in calculations or standards.
Vocabulary
Synonyms of “foot-pound-second”
Strong
Neutral
Weak
Vocabulary
Antonyms of “foot-pound-second”
Watch out
Common Mistakes When Using “foot-pound-second”
- Using it as a noun phrase on its own (e.g., 'I measured in foot-pound-second' is wrong; correct: 'I used the foot-pound-second system').
- Confusing it with 'foot-pound' (a unit of energy/torque).
- Capitalising it unnecessarily (it is not a proper noun like 'SI').
FAQ
Frequently Asked Questions
It is a specific formulation of the Imperial/US Customary system, explicitly naming its base units for length, mass, and time. 'Imperial system' is a broader term.
Primarily in specific fields in the United States (e.g., some areas of aerospace, civil engineering) and for certain legacy products. It is largely obsolete in science and most international engineering.
The International System of Units (SI), which is based on the metre, kilogram, and second (MKS), is the globally accepted modern alternative.
Yes, it is commonly abbreviated as FPS, especially in technical writing (e.g., 'FPS units', 'the FPS system').
Denoting or relating to a system of measurement that uses the foot, the pound, and the second as its base units for length, mass, and time, respectively.
Foot-pound-second is usually technical, historical in register.
Foot-pound-second: in British English it is pronounced /ˌfʊt ˌpaʊnd ˈsɛk(ə)nd/, and in American English it is pronounced /ˌfʊt ˌpaʊnd ˈsɛkənd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Not applicable for this technical term.”
Learning
Memory Aids
Mnemonic
FPS: Forget Preferred System? (A humorous take on its status as a largely superseded system outside specific fields.)
Conceptual Metaphor
A SYSTEM IS A FOUNDATION (It provides the base units upon which other derived units are built).
Practice
Quiz
What does 'foot-pound-second' specifically refer to?