Search anechoic anechoic /an′ekō″ik/ , (in ultrasonography) free of echoes; examples include a fluid-filled cyst. Tweet Telegram VK Random Words supraoptic nucleus direct self-destructive behavior (DSDB) scato-, skato- Meckel’s diverticulum nuclear scan polymerize ohm (Ω) scarlatiniform miner’s elbow intensifying screen