极点 jídiǎn extreme point Definitions Defs Origin Strokes Stroke Words Sentences Sents Showing: origin All meanings 3 jídiǎn 3 extreme point 2origin 1 1 sentence for 极点 (jídiǎn — origin) 在极坐标系中,极点通常用字母O来表示。 zài jízuòbiāoxì zhōng, jídiǎn tōngcháng yòng zìmǔO lái biǎoshì. In a polar coordinate system, the pole is usually represented by the letter O. Source: Dong Chinese Dictionary