meridian circle: meaning, definition, pronunciation and examples
C2Highly Technical
Quick answer
What does “meridian circle” mean?
A complete circle, marked from 0° to 360°, representing the celestial sphere's meridian, used in astronomy for measuring precise angular positions of stars.
Audio
Pronunciation
Definition
Meaning and Definition
A complete circle, marked from 0° to 360°, representing the celestial sphere's meridian, used in astronomy for measuring precise angular positions of stars.
The term can also refer more generally to a full, unbroken circle, particularly one used for measurement or navigation, or metaphorically to something that is complete, perfect, and cyclical.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. The term is equally rare and technical in both dialects.
Connotations
Purely technical and academic in both regions.
Frequency
Extremely low frequency in general use. Found exclusively in astronomy, navigation, or highly technical historical texts.
Grammar
How to Use “meridian circle” in a Sentence
The astronomer observed the transit using the [meridian circle].Vocabulary
Collocations
Examples
Examples of “meridian circle” in a Sentence
adjective
British English
- The meridian-circle observations were meticulously recorded.
American English
- The meridian-circle observations were meticulously recorded.
Usage
Meaning in Context
Business
Not applicable.
Academic
Used in astronomy, astrophysics, and history of science to describe a specific type of observational telescope or coordinate system.
Everyday
Virtually never used. A non-expert might use it metaphorically for a 'perfect circle' or 'complete cycle'.
Technical
The primary usage context. Refers to an instrument for determining right ascension and declination of celestial bodies as they cross the meridian.
Vocabulary
Synonyms of “meridian circle”
Strong
Neutral
Weak
Vocabulary
Antonyms of “meridian circle”
Watch out
Common Mistakes When Using “meridian circle”
- Confusing it with 'meridian' alone (a line) or 'circle' alone (any round shape). Using it in non-technical writing where 'full circle' or 'complete cycle' would be clearer.
FAQ
Frequently Asked Questions
No. The Prime Meridian is a specific line of longitude (0°). A meridian circle is an instrument that observes objects as they cross *any* meridian.
It would be highly unusual and overly technical. 'Perfect circle' or 'complete circle' is the natural choice.
No. It is a highly specialised term used almost exclusively by astronomers, historians of science, and navigators.
A meridian circle is a specialised type of telescope fixed to rotate only along the north-south meridian line, used for extremely precise positional measurements, unlike a general-purpose telescope.
A complete circle, marked from 0° to 360°, representing the celestial sphere's meridian, used in astronomy for measuring precise angular positions of stars.
Meridian circle is usually highly technical in register.
Meridian circle: in British English it is pronounced /məˈrɪdɪən ˈsɜːkl/, and in American English it is pronounced /məˈrɪdiən ˈsɜːrkl/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think of a MERIDIAN (a north-south line) combined with a CIRCLE (360 degrees). It's the complete circle of that north-south line around the sky.
Conceptual Metaphor
COMPLETENESS/PERFECTION IS A FULL CIRCLE (e.g., 'coming full circle', 'the meridian circle of his career').
Practice
Quiz
In which field is the term 'meridian circle' primarily used?