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：puls-, pulsi-, -pulsion, -pulsive

【来源及含义】Latin: push, beat, strike, knock, drive; drive to, force toward

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "push, shove, thrust": osmo-; pel-; trud-.

【同源单词】appulse, appulsive, appulsively, compulsion, compulsive, compulsively