放ほう射しゃ組そ織しき

noun

ray tissue

Botanical term for the radially oriented tissue in plant stems and roots, also known as medullary rays.

• 樹じゅ木もくの幹みきの断だん面めんに見みえる放ほう射しゃ状じょうの組そ織しきを放ほう射しゃ組そ織しきという。

  The radial tissue visible in a cross-section of a tree trunk is called ray tissue.