a countless or extremely great number 无数,极大数量 myriads of insects danced around the light above my head. 无数的昆虫在我头上围着灯光飞舞。
(chiefly in classical history) a unit of ten thousand [多用于古典历史剧中]一万
adjective
countless or extremely great in number 无数的,数量极大的 he gazed at the myriad lights of the city. 他凝眸眺望着城市的万家灯火。 ■having countless or very many elements or aspects 含有无数组成部分的;包括极多方面的;包罗万象的 the myriad political scene. 包罗万象的政治舞台。
语源
mid 16th cent. (in sense 2 of the noun): via late Latin from Greek murias, muriad-, from murioi '10,000'