词根词缀：ectro-

【来源及含义】Greek: abortion, untimely birth; primarily used to mean "congenital absence" or "defect" of a part which is normally present

【同源单词】ectrocardia, ectrocheiry, ectrochiry, ectrodactylia, ectrodactylism, ectrodactyly

词根词缀：meta-, met-, meth-

【来源及含义】Greek: after, behind, beyond; changed in form, altered; higher [used to designate a higher degree of a branch of science]

【同源单词】acrometagenesis, allochemical metamorphism, atmometamorphism, brachymetapody, digitometatarsal, ectrometacarpia

词根词缀：tars-, tarso-

【来源及含义】Greek > Latin: ankle, tarsal plate of the eyelid; from Greek tarsos, frame of wickerwork; broad, flat surface, as also in tarsos podos, the flat of the foot, instep of the foot; the edge of the eyelid

【同源单词】blepharorrhaphy, digitometatarsal, ectrometatarsia, entometatarse, longitarsal, metatarsal