词根词缀：com- [co-, cog-, col-, con-, cor-]

【来源及含义】Latin: together, together with, with

【相关描述】The prefix com- is assimilated to co- before h, w, and all vowels:

The prefix com- becomes, cog- before g: cognition, [co + gnoscere, "to know"], et al.

The prefix com- becomes, col- before l: colloquial, et al.

The prefix com- becomes, con- before c, d, g, j, n, q, s, t, v: covivant, et al.

The prefix com- becomes, cor- before r: corrigible, et al.

【相关词根词缀】 Related "together" units: greg-; inter-; struct-.

【同源单词】abscond, abscondee, anticorrosive, bioconcentration, coadjutant, coadjuting

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