submicroscopic

a. 亚微观的, 普通显微镜下看不出的 [医] 亚微观的, 亚显微的

别名

submicroscopical

释义与例句

adj.
  1. 1.

    Smaller than microscopic; too small to be seen even with a microscope

词源

From sub- + microscopic.

来源：wiktionary