词根词缀：histor-, histori-

【来源及含义】Greek > Latin: historical narrative; past events, past knowledge

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units meaning "know, knowledge; learn, learning": cogni-; discip-; gno-; intellect-; learn, know; math-; sap-; sci-; sopho-.

【同源单词】ahistorical, ethnohistorian, ethnohistoric, ethnohistorical, ethnohistory, future history

词根词缀：-ity

【来源及含义】Latin: suffix used to form abstract nouns expressing act, state, quality, property, or condition corresponding to an adjective

【同源单词】abnormality, absorbability, acclivity, acerbity, acridity, acrity