词根词缀：ped-, pedi-, -pedal, -ped, -pede, -pedia

【来源及含义】Latin: foot, feet; people often see this ped element in other words. When people refer to "pedal extremities", they mean "feet". When anyone pushes the pedals of a bicycle, it is done with the feet. A pedestrian must use the feet for walking. A quadruped has four feet while a centipede has "100 feet"; or a large number of them because it may be impossible to count all of them.

【相关词根词缀】 Related "foot, feet" units: melo-; planta-; podo-; -pus.

【同源单词】aliped, anguiped, anomaliped, biped, bipedal, bipedal

词根词缀：sesqui-

【来源及含义】Latin: one and a half; normally used as a prefix; from Latin, semis “half” + que “and”

【相关描述】In chemistry, three atoms or equivalents of the [specified] element or radical are combined with two of another, as in iron sesquioxide, Fe ²O³. Also defined as the proportion of two (of one radical or element) to three (of another).

【同源单词】hippopotomonstrosesquipedalian, hippopotomonstrosesquipedalianism, hippopotomonstrosesquipedalianist, hippopotomonstrosesquippedaliophobia, hyperpolysyllabicsesquipedalianist, sesquialteral