词根词缀：gero-, geri-, ger-, geronto-, geront-

【来源及含义】Greek: old age, old man, old people; elder, elderly; senior citizen

【相关描述】Don't confuse this gero-, ger- with another Latin ger- which means "to carry, to produce; to bear".

【相关词根词缀】 Related "old; old age, elder" units: obsolesc-; presbyo-; sen-; veter-.

【同源单词】agerasia, eugeria, geranosis, geransis, gerascophobia, gerathymia

词根词缀：pro-, por-, pur-

【来源及含义】Greek > Latin: a prefix signifying before; forward, forth; for, in favor of; in front of; in place of, on behalf of; according to; as, to place before; to go before or forward, to throw forward

【相关词根词缀】 Related before-word units: ante-; antero-; anti-; pre-.

【同源单词】portend, portent, portentous, portentously, portentousness, pro