milliradian: meaning, definition, pronunciation and examples
Very LowTechnical/Specialized
Quick answer
What does “milliradian” mean?
A unit of angular measurement equal to one thousandth of a radian.
Audio
Pronunciation
Definition
Meaning and Definition
A unit of angular measurement equal to one thousandth of a radian.
Used primarily in fields like ballistics, optics, and military targeting to express small angular measurements, often for precision adjustments.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is consistent.
Connotations
Technical, precise, associated with military, engineering, or scientific contexts in both varieties.
Frequency
Equally rare in both British and American English, confined to identical technical fields.
Grammar
How to Use “milliradian” in a Sentence
[Number] + milliradian(s)adjust by [Number] milliradiansa deviation of [Number] milliradiansVocabulary
Collocations
Examples
Examples of “milliradian” in a Sentence
adjective
British English
- The scope has milliradian click adjustments.
- They needed milliradian accuracy for the experiment.
American English
- The reticle is calibrated in milliradian increments.
- Make a milliradian correction to the laser.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in physics, engineering, and ballistics papers.
Everyday
Extremely unlikely to be encountered.
Technical
Standard term in precision optics, rifle scopes, artillery, and laser alignment.
Watch out
Common Mistakes When Using “milliradian”
- Misspelling as 'milliradian' (missing an 'i').
- Pronouncing it as /mɪˈlɪrədɪən/ (stress on second syllable). Correct stress is on 'ra'.
- Using it as a general term for any small angle instead of its specific SI-derived definition.
FAQ
Frequently Asked Questions
No, they are different angular units. 1 MOA is approximately 0.2909 milliradians. Milliradians are based on the radian (SI unit), while MOA is based on degrees.
It is commonly used in rifle scopes for long-range shooting (where adjustments are in 'mils'), in military targeting for artillery and mortars, and in optics for measuring beam divergence.
The standard abbreviation is 'mrad'.
Yes, as it uses the SI prefix 'milli-' with the SI derived unit 'radian', it is considered part of the metric system for angular measurement.
A unit of angular measurement equal to one thousandth of a radian.
Milliradian is usually technical/specialized in register.
Milliradian: in British English it is pronounced /ˌmɪlɪˈreɪdɪən/, and in American English it is pronounced /ˌmɪlɪˈreɪdiən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Not applicable for this technical term.”
Learning
Memory Aids
Mnemonic
Think 'MILLI' (like millimetre, one thousandth) + 'RADIAN' (angle unit). A milliradian is a thousandth slice of a radian.
Conceptual Metaphor
ANGULAR MEASUREMENT IS A PRECISION TOOL (for hitting targets or aligning systems).
Practice
Quiz
A milliradian is most precisely defined as: