luminalWiktionary 原文1词源 1构词拆分lumina词根/词干拉丁语“lights”+-al后缀Of or pertaining to. Adjectival suffix appended to various words, often nouns, to produce an adjective form. Often added to words of Latin origin, but used with other words also. · Forming nouns, especially of verbal action.词源说明From Latin lumina (“lights”) + English -al.释义（英文）形容词 Adjective(biology) of or pertaining to the lumen(physics) of or pertaining to the nature of light(physics) light-speed; having the speed of light (usually in the void)词族派生词（16）transluminalinterluminalsubluminalsuperluminalabluminal2词源 2词源说明From the brand name.释义（英文）名词 Noun(medicine) The drug phenobarbital.