semicircular

adj having the shape of a semicircle 半圆形的.

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, semicircle, semicolon, semiconductor, semifinal, semifinalist, seminal, seminar, seminarist, seminary, semiotics, semiprecious, semiquaver, Semite, Semitic, semitone, semitropical, semivowel, semolina, sempstress, SEN, senate,