semicircle

n half of a circle or of its circumference; thing arranged like this 半圆形; 半圆形的周长; 半圆形的东西: a semicircle of chairs 排列成半圆形的椅子 * sitting in a semicircle round the fire 围著火坐成半圈. => illus at circle 见 circle 插图.

sell-out, seller, seller's market, selling price, selling-point, Sellotape, selvage (also selvedge), selves, semantic, semantics, semaphore, semblance, semen, semester, semi, semi-, semi-conscious, semi-detached, semi-skilled, semibreve, semicircular, semicolon, semiconductor, semifinal, semifinalist, seminal, seminar, seminarist, seminary, semiotics, semiprecious, semiquaver, Semite, Semitic, semitone, semitropical, semivowel, semolina, sempstress, SEN,