脈みゃく理りMeanings1nounstria; striae; cord; cordingTechnical term in geology, materials science, or glassmaking for linear marks, streaks, or cord-like inclusions. Not a common everyday word.このガラス製せい品ひんには脈みゃく理りが見みられる。Striae can be seen in this glass product.脈みゃく理りは鉱こう物ぶつの内ない部ぶ構こう造ぞうを示しめすことがある。Striae can sometimes indicate the internal structure of a mineral.