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：petro-, petr-, petri-, peter-

【来源及含义】Greek > Latin: stone, rock

【相关词根词缀】 Related "stone, rock" word families: lapid-; litho-; saxi-; stele-.

【同源单词】Peter, petracide, petrichor, petricole, petricoline, petricolous