numeral · the fifth of the ten Heavenly Stems

戊在天干中对应五行中的土。

numeral · fifth in a sequence, often representing the letter E or Roman numeral V in lists

在这次等级评定中，他只得到了戊等。

a prefix meaning five, specifically used in chemistry for compounds with five carbon atoms

戊烷是一种具有五个碳原子的有机化合物。