卟 bǔ a chemical compound Origin Definitions Defs Strokes Stroke Words Sentences Sents 卟啉 bǔlín porphyrin porphyrin (organic chemical essential to hemoglobin and chlorophyll) (loanword)卟吩 bǔfēn porphin porphin C20H14N4 (loanword) Sources Frequency data MTSU Chinese text computing