infinitesimal
/ˌɪnfɪnɪˈtesɪm(ə)l/📚 24820GREsatSomething that is infinitesimal is extremely small. 极微小的
adjective [原级]无穷小的；无限小的；极小的
...mineral substances present in infinitesimal amounts in the soil. ...
土壤里含有的极微量的矿物质。
noun [抽象名词]无限小；极微量；极小量
That great, infinitesimal question - I can't shake it out of my thoughts.
那伟大的浩瀚无涯的问题我是无法赶出脑袋了。
来自infinite (无穷的) + simal → 无穷小的， 极小的
单词造句: