词根词缀：aqua-, aquatic-, aqui-, aqu-, -aquatically, aque-, -aqueous

【来源及含义】Latin: water, watery solution

【相关词根词缀】 Cross references of word families that refer to "water": hydat-; hydro-; hygro-.

【同源单词】alluvial aquifer, aqua, aqua exclusa, aqua potabile, aqua regia, aqua weed cutter

词根词缀：-ation, -ization, -isation

【来源及含义】Greek > Latin: a suffix; action, act, process, state, or condition; or result of doing something

【相关描述】Although there are over 1,450 word entries ending with -ation or -ization listed in this unit, there are certainly many more which exist in the English language. At any rate, this unit provides a significant number of -ation and -ization examples for you to see.

【同源单词】abarticulation, abbreviation, abdication, abdominal examination, aberration, abevacuation

词根词缀：spiro-, spir-, spira-, spirat-, -spire, -spiring, -spiration, -spirational (breath)

【来源及含义】Latin: breath of life, breath, breathing; mind; spirit, "soul"; courage

【相关描述】Don't confuse this spiro-, with another spiro- meaning "coil, twisted".

【相关词根词缀】 Word units related to breath and breathe: hal-; pneo-; pneumato-; pneumo-; psych-.

【同源单词】antiperspirant, aquatic respiration, aspirant, aspirate, aspirate, aspiration