探信 たんしん Meanings Noun transmission of a sonar pulse; pinging Kanji 探 search. Read as タン. 信 trust. Read as シン. Words containing 探信 電波探信儀 (でんぱたんしんぎ) radar 探信儀 (たんしんぎ) (active) sonar Jinuma: Japanese Dictionary · Word lists