boresight: meaning, definition, pronunciation and examples
C2 / Very Low FrequencyTechnical
Quick answer
What does “boresight” mean?
A precise alignment tool for aiming, used to align a weapon's sighting system or a directional device with the axis of its barrel or mounting.
Audio
Pronunciation
Definition
Meaning and Definition
A precise alignment tool for aiming, used to align a weapon's sighting system or a directional device with the axis of its barrel or mounting.
The act or process of aligning, or the resulting state of alignment. Can refer to a reference direction used in various technical systems (e.g., aircraft, radar, lasers).
Dialectal Variation
British vs American Usage
Differences
Spelling and usage are identical. Both dialects use the term primarily in military and aerospace engineering contexts.
Connotations
Same neutral, technical connotations in both regions.
Frequency
Equally rare and specialized in both UK and US English, found only in relevant technical fields.
Grammar
How to Use “boresight” in a Sentence
NP1 performed a boresight on NP2NP1 aligned NP2 using a boresightThe boresight of NP1 is offVocabulary
Collocations
Examples
Examples of “boresight” in a Sentence
verb
British English
- The armourers will boresight the new cannon tomorrow.
- Before the mission, we must boresight all the helicopter's weapon systems.
American English
- The technician needs to boresight the laser designator to the rifle.
- The drone's camera was boresighted with its targeting pod.
adverb
British English
- No standard adverbial use. Possibly 'boresight-aligned' as a compound adjective.
American English
- No standard adverbial use.
adjective
British English
- The boresight procedure is outlined in the manual.
- They recorded a significant boresight error during the test.
American English
- We need a boresight tool for this model of sight.
- The boresight alignment was off by three mils.
Usage
Meaning in Context
Business
Not used.
Academic
Used in engineering papers, especially aerospace, defense, and optical engineering.
Everyday
Virtually never used.
Technical
Common core term in military, aviation, radar, and precision optics for describing the initial alignment of a system.
Vocabulary
Synonyms of “boresight”
Watch out
Common Mistakes When Using “boresight”
- Using 'boresight' as a general synonym for 'target' (e.g., 'The boresight was in sight' – incorrect). Confusing it with 'bore sight' as two separate words (should be one word or hyphenated).
FAQ
Frequently Asked Questions
It is standard as one word (boresight), though you may occasionally see it hyphenated (bore-sight), especially in older texts.
Almost certainly not. It is a highly technical term specific to weapons, optics, and directional systems. Using it in general conversation would be confusing.
Boresighting is a rough initial alignment, often done mechanically or with a device, to get the sight on paper at a short distance. Zeroing is the final, precise adjustment done by firing live ammunition at a specific range.
Yes. In aviation, it can refer to aligning sensors (like FLIR cameras or radar) with the aircraft's reference axis, or to the fixed reference line for a head-up display (HUD).
A precise alignment tool for aiming, used to align a weapon's sighting system or a directional device with the axis of its barrel or mounting.
Boresight is usually technical in register.
Boresight: in British English it is pronounced /ˈbɔː.saɪt/, and in American English it is pronounced /ˈbɔːr.saɪt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “On the boresight (perfectly aligned, perfectly correct)”
Learning
Memory Aids
Mnemonic
BORE + SIGHT: Imagine sighting (looking) directly down the BORE (hole) of a rifle to align it perfectly.
Conceptual Metaphor
PRECISION IS ALIGNMENT; CORRECT DIRECTION IS A STRAIGHT PATH THROUGH A TUBE.
Practice
Quiz
In which context is 'boresight' MOST likely to be used?