词根词缀：psammo-, psamm-, psamme-

【来源及含义】Greek: sand

【同源单词】clepsammia, endopsammon, epipsammic, epipsammon, mesopsammon, pelopsammic

词根词缀：uro-, ur-, ure-

【来源及含义】Greek: urine [water, rain, wet]

【相关描述】Don't confuse this uro- unit with another uro- unit meaning "tail".

【同源单词】uroacidimeter, urodynamic, urodynamics, urodynia, uroerythrin, urogenous