词根词缀：rotundi-, rotundo-, rotund-

【来源及含义】Latin: rotondo, rotundus; round, rounded; from Latin, rota, "wheel"

【同源单词】obrotund, ore rotundo, orotund, orotundity, rotandify, rotund

词根词缀：tetra-, tetr-

【来源及含义】Greek: four; a number used as a prefix

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

【同源单词】rotundo-tetragonal, tessaraglot, tetrabasic, tetrablastic, tetrabrach, tetrabrachius