半圆仪 Traditional form: 半圓儀 Pinyin (reading): bànyuányí Definitions: protractor Characters: 半 - half; semi-, incomplete 圆 - circle; circular, round; complete 仪 - instrument, apparatus; ceremony, rites Traditional characters: 半 - half; semi-, incomplete 圓 - circle; circular, round; complete 儀 - instrument, apparatus; ceremony, rites