upper lateral sinus
/ˌʌpə ˈlatəɹəl ˈləʊb/
n
English · upper lateral sinus中文 · 上侧裂片间凹Español · seno lateral superiorFrançais · sinus latéral supérieur
意味：Indentation of the leaf’s main part, separating the terminal lobe from the upper lateral lobe.