词根词缀：extra-, extro-, extr-, exter-

【来源及含义】Latin: beyond, outside, on the outside, outward, external

【同源单词】Ab extra, ad extra, ad extremum, exteriorly, external, external reforming

词根词缀：terr-, terra-, -ter

【来源及含义】Latin: earth, dry land, land

【相关描述】This unit presents many words that are used in references having to do with earth and land; that is, the loose, fragmented material that composes part of the surface of this planet that we live on.

Don't confuse this element with other words that are spelled in a similar way; such as, terrify, terrible.

【相关词根词缀】 Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; chthon-; epeiro-; geo-; glob-; lut-; myso-; pedo-; pel-; rhyp-; soil-; sord-.

【同源单词】circumterrestrial, disinter, disinterment, exoterroid, extraterrestrial, extraterrestrial