深しん成せい岩がん

noun

intrusive igneous rock; plutonic rock

Technical term in geology for igneous rock that solidified deep underground, forming large crystals. Common examples include granite.

• 花か崗こう岩がんは深しん成せい岩がんの一いっ種しゅです。

  Granite is a type of plutonic rock.

• 深しん成せい岩がんは地ち下か深ふかくでゆっくり冷ひえて固かたまった岩がん石せきです。

  Plutonic rocks are rocks that cooled and solidified slowly deep underground.