词根词缀：latero-, later-, lateri-, -lateral, -laterally

【来源及含义】Latin: side, sideways; flank

【同源单词】ambilateral, anterolateral, bilateral, bilateralism, bilaterally, collateral

词根词缀：septi-, sept-, septem-

【来源及含义】Latin: seven, seventh; a word element for number 7

【同源单词】septangle, septangular, septarch, septarchy, septave, September