词根词缀：meter-, metro-, metr-, -metrical, -metrically, -metron, -metric, -metrist, -meter, -meters, -metry, -metre

【来源及含义】Greek: measure

【相关词根词缀】 Related "measure" and "metric" words and charts: mens-; Metric Chart of Units; Metric-Length Converter; Metric Units and Links.

【同源单词】absorptiometry, accelerometer, acetimeter, acetimetry, acidimeter, acidimetry

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