cir
cir — abbreviation
1. a written short form of 'circle' or 'circular', used on signs, labels, and diagr
a written short form of 'circle' or 'circular', used on signs, labels, and diagrams to refer to something shaped like a ring or a round area.
The park map showed a dotted cir for the picnic zone near the lake.
written abbreviation on maps and diagrams
Emma drew a small cir around each correct answer before handing in her test.
The architect labelled the central courtyard as 'cir area' on the floor plan.
Henry used a compass to draw a perfect cir on his geometry homework.
文法句型
used before a noun (e.g. cir area)
used as a label on diagrams
用法筆記
Found mainly in written notes, diagrams, and technical drawings rather than in full sentences.
2. a written short form of 'circuit', referring to a closed loop through which elec
a written short form of 'circuit', referring to a closed loop through which electricity can travel, or a diagram showing such a loop.
Rachid checked each cir on the control panel for loose connections before starting the machine.
technical context: electrical cir board
The physics worksheet asked students to label the main parts of a simple cir diagram.
used in academic worksheets and textbooks
Lakshmi replaced the broken cir board inside the old radio and it worked again.
Omar traced the copper wires on the cir board to find where the signal stopped.
文法句型
used in technical writing (e.g. cir board)
used on labels for electrical components
用法筆記
Common in engineering notes, physics class handouts, and technical manuals rather than everyday speech.
3. a written short form of 'circumference', meaning the distance measured all the w
a written short form of 'circumference', meaning the distance measured all the way around a circle or any round object.
The label on the metal pipe listed its cir as forty-two centimetres.
used in measurements and specifications
Theo calculated the cir of a circle with a radius of five using the formula.
The wooden wheel had a cir of just over two metres around its outer edge.
Nikos measured the cir of the tree trunk with a cloth tape and wrote it down.
文法句型
used in measurements (e.g. cir = 42 cm)
used in math problems