1. not transparent to X-rays or other forms of radiation; - Example: "barium sulfate is radiopaque" [syn: radiopaque, radio-opaque]
WordNet (r) 3.0 (2006):
radiopaque
adj 1: not transparent to X-rays or other forms of radiation;
"barium sulfate is radiopaque" [syn: radiopaque,
radio-opaque] [ant: radiolucent]