semicircle

Word family  noun circle semicircle circulation adjective circular semicircular circulatory verb circle circulate

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

Related topics: Maths, Shapes, patterns

sem·i·cir·cle /ˈsemiˌsɜːkəl $ -ɜːr-/ noun [countable]  HMhalf a circle 半圆in a semicircle About 50 children sat in a semicircle around me. 大约有50个小孩子围成半圆坐在我身边。 →5 see picture at 见图 circle1 —semicircular /ˌsemiˈsɜːkjələ◂ $ -ˈsɜːrkjələr◂/ adjective

Examples from the Corpus

semicircle• The gallery at the top formed a semicircle with wings branching out on either side.• The teacher had arranged the desks in a semicircle.• 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.• A semicircle of chairs faced his desk.• Behind the beach is a huge semicircle of limestone cliffs.• I looked through the window, a large semicircle that extended almost to the ceiling.• The line formed a two-mile semicircle along the bank of a small creek that was fringed with woods.• Grouped around one car in a respectful semicircle, they stared, their eyes fixed to one window.• Britta was still at her post, standing in the semicircle of two-D screens.in a semicircle• I backed around in a semicircle, looking for a way out.• We all gathered on chairs in a semicircle round the hearth.• Sitting on the ground in a semicircle for their first lesson, their faces radiate interest, hope and curiosity.• More like an amphitheatre, with rows of seats in semicircles high up at the back.• And as she stood, she saw a dozen men enter the room to stand in a semicircle around her.

sem·i·cir·cle nounChineseSyllable  

circle Corpus half a

semicircle
sem‧i‧cir‧cle /ˈsemiˌsɜːkəl $ -ɜːr-/ noun [countable]half a circle
    in a semicircle
    About 50 children sat in a semicircle around me.
—semicircular /ˌsemiˈsɜːkjələ◂, ˌsemiˈsɜːkjʊlə◂ $ -ˈsɜːrkjələr◂/ adjective
     

THESAURUS

■ types of shapes
   ▪ square 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

semi·circleBrE /ˈsemisɜːkl/ 🔊NAmE /ˈsemisɜːrkl/ 🔊 noun

(geometry 几何) one half of a circle 半圆the line that forms the edge of a semicircle 半圆弧线a thing, or a group of people or things, shaped like a semicircle 半圆形◆a semicircle of chairs摆成半圆形的椅子◆We sat in a semicircle round the fire. 我们坐在炉火前，围成一个半圆形。🔊🔊▸ semi·cir·cu·lar BrE /ˌsemiˈsɜːkjələ(r)/ 🔊NAmE /ˌsemiˈsɜːrkjələr/ 🔊 adjective◆a semicircular driveway半圆形车道