词根词缀：circ-

【来源及含义】Latin: circle [a ring; wheel], round

【相关词根词缀】 Related "around, round, surrounding" units: ambi-; ampho-; circum-; cyclo-, -cycle; gyro-; peri-.

【同源单词】circa, circadian, circle, circled, circlet, circling

词根词缀：di-, die-, -diem, diurn-

【来源及含义】Latin: day

【相关描述】Don't confuse this dies, "day" (DEE uhs) with the verb dies (DIGHZ) which refers to "dying" or "death".

【相关词根词缀】Another related "day" unit is located at hemer-.

【同源单词】adjourn, adjournment, antemeridian, Carpe diem, circadian, diary

词根词缀：-ian

【来源及含义】Latin: suffix form of -an from -ianus, a modifier of the main word to which it is attached: belonging to, coming from, being involved in, or being like something

【相关描述】Appearing in such words as comedian, egalitarian, Bostonian, Italian, Smithsonian, mathematician, Alabamian, Californian, Arizonian, and Canadian. It is attached to the root of common or proper nouns with the meanings "of, pertaining to, from", or "like" the proper name appearing in the stem.

【同源单词】abecedarian, academician, acanthopterygian, acararian, acoustician, aeolian