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：-ism, -ismus

【来源及含义】Greek, ismos; Latin, ismus: a suffix: belief in, practice of, condition of, process, characteristic behavior or manner, abnormal state, distinctive feature or trait

【同源单词】abaptism, abolitionism, abortionism, abrakophilism, absenteeism, absolutism

词根词缀：terri-

【来源及含义】Latin: frightful, fearful; fear; fright; literally, causing terror

【相关描述】Don't confuse this element with other words that are spelled in a similar way; such as, terrestrial, territory.

【同源单词】bioterror, bioterrorism, bioterrorist, deter, deterrent, deterrently