词根词缀：-acious

【来源及含义】Latin: suffix; forming adjectives; inclined to, given to, tendency to be, abounding in

【同源单词】alliacious, audacious, capaciously, ceracious, difficacious, efficacious

词根词缀：-ous, -ious, -eous

【来源及含义】Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

【相关描述】Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

【同源单词】abdominous, abiogenous, ablepharous, abstemious, acanthaceous, acanthocephalous

词根词缀：spac-, spat-

【来源及含义】Latin: room, area, distance, stretch of time; space

【同源单词】aerospace, aerospace engineering, cyberspace, expatiate, expatiation, hydrospace