pitch line: meaning, definition, pronunciation and examples
C2Technical/Formal
Quick answer
What does “pitch line” mean?
The imaginary line along which the teeth of a gear mesh, or the line representing the theoretical contact path between gear teeth.
Audio
Pronunciation
Definition
Meaning and Definition
The imaginary line along which the teeth of a gear mesh, or the line representing the theoretical contact path between gear teeth.
In a broader technical sense, it can refer to any reference line used to define the spacing or alignment of repeating elements, such as in threads, perforations, or rows of items. In marketing or sales, it can metaphorically refer to the core persuasive message or argument in a presentation.
Dialectal Variation
British vs American Usage
Differences
No significant differences in technical meaning. Spelling conventions follow standard UK/US patterns (e.g., 'centre' vs. 'center') when used in descriptive text.
Connotations
Neutral and technical in both varieties. The metaphorical business use is equally rare in both.
Frequency
Extremely low frequency in general language. Exclusively found in technical manuals, engineering textbooks, and specialized industry discussions.
Grammar
How to Use “pitch line” in a Sentence
The [noun] is aligned with the pitch line.Calculate the diameter at the pitch line.The gears mesh along their pitch lines.Vocabulary
Collocations
Examples
Examples of “pitch line” in a Sentence
verb
British English
- The engineer must carefully pitch the gear teeth to ensure the pitch line is correct.
American English
- The designer pitched the thread profile relative to the established pitch line.
adverb
British English
- The cogs were aligned pitch-line perfectly.
American English
- The teeth engage pitch-line accurately.
adjective
British English
- The pitch-line diameter is a critical measurement.
American English
- We need a pitch-line calculation for the prototype.
Usage
Meaning in Context
Business
Rare. Could metaphorically mean the central, persuasive thread of a sales argument.
Academic
Used in engineering, physics, and manufacturing papers and textbooks.
Everyday
Virtually never used.
Technical
Standard term in mechanical design, gear theory, and machining.
Vocabulary
Synonyms of “pitch line”
Strong
Neutral
Weak
Vocabulary
Antonyms of “pitch line”
Watch out
Common Mistakes When Using “pitch line”
- Confusing it with 'pitch' as in sales talk or baseball throw.
- Using it in non-technical contexts without explanation.
- Misspelling as 'pich line'.
FAQ
Frequently Asked Questions
In a planar cross-section of a gear, the pitch line becomes a pitch circle. 'Pitch line' is the general term for the contact path, which in a spur gear is circular.
No, it is a highly specialized technical term. Using it in general conversation would likely cause confusion.
It is the linear velocity at the pitch line of a gear, a crucial parameter for calculating gear performance and lubrication requirements.
No, they are different meanings. In 'pitch line', 'pitch' relates to the spacing or angle of teeth. In 'elevator pitch', 'pitch' means a persuasive summary.
The imaginary line along which the teeth of a gear mesh, or the line representing the theoretical contact path between gear teeth.
Pitch line is usually technical/formal in register.
Pitch line: in British English it is pronounced /ˈpɪtʃ ˌlaɪn/, and in American English it is pronounced /ˈpɪtʃ ˌlaɪn/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Imagine a line where two gears 'pitch' (or meet) their teeth together perfectly.
Conceptual Metaphor
PRECISION IS ALIGNMENT (Technical); THE CORE ARGUMENT IS A LINE (Metaphorical, Business).
Practice
Quiz
In which field is the term 'pitch line' most commonly used?