词根词缀：calci-, calc-, calcane-, calcio-, calco-, calcar-, calx

【来源及含义】Latin: lime, calcium; heel, bone of the tarsus; to tread [derived from calx, calcis, limestone, lime, pebble; from Greek words halix and psephos meaning "small stone, pebble"]

【同源单词】a capite ad calcem, acalculia, astragalocalcanean, calcaneal, calcanean, calcaneitis

词根词缀：-penia- (s), -penias (pl), -penic, pen-, penia-

【来源及含义】Greek > Modern Latin: abnormal reduction, decrease in, insufficient, deficiency. Originally, the meaning was poverty, need; sometimes it is erroneously or incorrectly rendered as -poenia

【同源单词】calcipenia, chloropenia, cytoglucopenia, cytopenia, eosinopenia, erythroblastopenia