词根词缀：echo-, ech-

【来源及含义】Greek: sound, noise; especially a returned sound; repetition, imitation

【同源单词】anecho, anechoic, catecheses, catechesis, catechetical, catechism

词根词缀：eco-, oeco-, oec-

【来源及含义】Greek: house, household affairs [environment, habitat], home, dwelling; used in one extensive sense as, "environment"

【相关词根词缀】Related "home; house" word units: domo-; ecdemo-; nosto-.

【同源单词】agroecologist, agroecology, autecological, autecology, bioecological, bioecologist

词根词缀：-ectasia

【来源及含义】Greek: dilatation, dilation, expansion, extension, or distension of an organ

【同源单词】angiectasia, angioectasia, aortectasia, arteriectasia, capillarectasia, colpectasia

词根词缀：-ectasis

【来源及含义】Greek: ektasis; dilated, expanded, distended, extension +

【同源单词】aeroatelectasis, angiectasis, angiotelectasis, arteriectasis, atelectasis, bronchiectasis

词根词缀：ecto-, ect-

【来源及含义】Greek: outside, external, beyond

【同源单词】ectobiology, ectoblast, ectocardia, ectocytic, ectoderm, ectodermal

词根词缀：-ectomy, -ectome, -ectomize

【来源及含义】Greek: a suffix; cut, excise, surgical removal of

【相关词根词缀】 Related cutting-word units: cast-; castrat-; -cise, -cide; mutil-; put-; sec-, seg-; temno-; -tomy; trunc-.

【同源单词】abdominal hysterectomy, abdominal nephrectomy, abdominohysterectomy, acetabulectomy, acromionectomy, adenectomy

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：ed-, edi-

【来源及含义】Latin: edere, "to bite, to eat; eating, eatable; consume"

【同源单词】eat, eatable, edacious, edacity, edibility, edible

词根词缀：eda-

【来源及含义】Greek: soil

【同源单词】edaphic, edaphology, edaphon, Edaphosaurus

词根词缀：ede-, edema-, oedema-

【来源及含义】Greek: swell, swelling

【同源单词】acroedema, angioedema, angioneuredema, blepharedema, colpedema, cyesedema