extrathoracic
构词拆分
也可拆分为
thorax词根/词干
+
-ic后缀
Used to form adjectives from nouns with the meaning “of or pertaining to”. · (chemistry) Used to denote certain chemical compounds in which a specified chemical element has a greater oxidation number than in the equivalent compound whose name ends in the suffix -ous. For example sulphuric acid (H₂SO₄) has more oxygen atoms per molecule than sulphurous acid