词根词缀：gravido-, gravid-

【来源及含义】Latin: pregnant, pregnancy [from grav-, heavy]

【相关词根词缀】Related "pregnant, pregnancy" word units: cyesio-, cyo-; cyo-.

【同源单词】decigravida, geodetic gravimetry, gravid, gravida, gravidic, gravidism

词根词缀：quatr-, quart-

【来源及含义】Latin: fourth, four

【相关词根词缀】 Cross references of word families that are related, partially or totally, to: "four, fourth": quadri-; tessara-; tetra-.

【同源单词】biquarterly, quart, quartan, quartation, quarte, quarte