semicirclesem‧i‧cir‧cle /ˈsemiˌsɜːkəl $ -ɜːr-/ noun [countable] 
Examples
About 50 children sat in a semicircle around me.—semicircular /ˌsemiˈsɜːkjələ◂ $ -ˈsɜːrkjələr◂/ adjective
ExamplesEXAMPLES FROM OTHER DICTIONARIES
Thesaurus- A semicircle of chairs faced his desk.
- Behind the beach is a huge semicircle of limestone cliffs.
- The teacher had arranged the desks in a semicircle.
- Britta was still at her post, standing in the semicircle of two-D screens.
- Grouped around one car in a respectful semicircle, they stared, their eyes fixed to one window.
- I looked through the window, a large semicircle that extended almost to the ceiling.
- The gallery at the top formed a semicircle with wings branching out on either side.
- The line formed a two-mile semicircle along the bank of a small creek that was fringed with woods.
- The porch is a semicircle of giant Ionic columns running the full height of the house.
- The radiating ribs of a fan are of equal length and the bounding line is in the form of a semicircle.
THESAURUStypes of shapes► square
Word family a shape with four straight sides that are equal in length and four angles of 90 degrees
► circle a round shape that is like an O
► semicircle half a circle
► triangle a shape with three straight sides and three angles
► rectangle a shape with four straight sides and four angles of 90 degrees
► oval a shape like a circle, but that is longer than it is wide
► cylinder an object in the shape of a tube
► cube a solid object with six equal square sides
► pyramid a shape with a square base and four triangular sides that meet in a point at the top
► sphere a shape like a ball
Longman Language Activatorhalf a circle► semicircle · Behind the beach is a huge semicircle of limestone cliffs.in a semicircle · The teacher had arranged the desks in a semicircle.
WORD SETS► Mathsabacus, nounalgebra, nounangle, nounarc, nounarea, nounarithmetic, nounarithmetic, adjectivearithmetic progression, nounaxis, nounbar chart, nounbar graph, nounbase, nounbinomial, nounbisect, verbBoolean, adjectiveC, nouncalculator, nouncalculus, nouncanonical, adjectivechord, nouncipher, nouncircumference, nouncircumscribe, verbcompass, nouncomplementary, adjectivecomputation, nouncompute, verbconcentric, adjectivecone, nouncongruent, adjectiveconical, adjectiveconstant, nouncontain, verbcoordinate, nouncoordinate, adjectivecos, cosine, nouncube, nouncubic, adjectivecurvature, nouncurve, nouncut, verbdeci-, prefixdeviation, noundiagonal, adjectivediameter, noundifferential calculus, noundigit, noundimension, noundomain, nouneccentric, adjectiveellipse, nounelliptical, adjectiveequal, adjectiveequal, verbequals sign, nounequation, nounequilateral triangle, nounexponential, adjectiveexpress, verbexpression, nounface, nounfigure, nounflow chart, nounformula, nounfraction, nounfractional, adjectivefunction, noungeometric, adjectivegeometry, noungraph, noungraphically, adverbgraph paper, noungrid, nounHCF, helix, nounheptagon, nounhexagon, nounhistogram, nounhypotenuse, nounimperial, adjectiveimproper fraction, nouninfinity, nouninformation theory, nouninnumerate, adjectiveinto, prepositioninverse, adjectiveisosceles triangle, nounline graph, log, nounlogarithm, nounlong division, nounlozenge, nounmath, nounmathematical, adjectivemathematician, nounmathematics, nounmatrix, nounmean, adjectivemedian, nounmedian, adjectivemetric, adjectiveminus, prepositionminus, nounminus, adjectiveminus sign, nounminute, nounmultiplication, nounmultiplication sign, nounmultiplication table, nounmultiply, verbN, nounnumber, nounnumerate, adjectivenumeration, nounoblong, adjectiveobtuse angle, nounoctagon, nounoval, nounparabola, nounparallel, adjectiveparallelogram, nounpentagon, nounpercentage, nounperimeter, nounperpendicular, nounpi, nounpictogram, nounpie chart, nounplane, nounplane geometry, nounplus, prepositionplus, nounplus, adjectiveplus sign, nounpolygon, nounpolyhedron, nounpower, nounprism, nounprobability, nounproof, nounproportion, nounproposition, nounprotractor, nounquadrangle, nounquadrant, nounquadratic equation, nounquadri-, prefixquadrilateral, nounradius, nounratio, nounrectangle, nounrectilinear, adjectiverecur, verbrhombus, nounright angle, nounright-angled triangle, nounroot, nounruler, nounscale, nounscalene triangle, nounscatter diagram, section, nounsegment, nounsemicircle, nounset square, nounsine, nounslide rule, nounsolid, adjectivesolid, nounsolution, nounsolve, verbsphere, nounsquare, adjectivesquare, nounsquare, verbsquare, adverbsquarely, adverbsquare root, nounsubset, nounsubtract, verbsubtraction, nounsum, nounsurface area, nounsymmetrical, adjectivesymmetry, nountangent, nounterm, nountheorem, nounthreefold, adjectivetimes, prepositiontrapezium, nountriangle, nountrigonometry, nountwo-dimensional, adjectivevalue, nounvariable, nounvector, nounVenn diagram, nounvertex, nounvertical, adjectivevolume, nounwork, verbX, nounx-axis, nouny-axis, noun
WORD FAMILYnouncirclesemicirclecirculationadjectivecircularsemicircularcirculatoryverbcirclecirculate
half a circlein a semicircle About 50 children sat in a semicircle around me.—semicircular /ˌsemiˈsɜːkjələ◂ $ -ˈsɜːrkjələr◂/ adjective