submicroscopic
Kelime Anlamı :

1. mikroskopla görülemeyecek kadar küçük.
2. Mikroskopla görülemeyecek derecede ufak olan.
Tanımlar :
1. too small to be resolved by an optical microscope.
from The American Heritage® Dictionary of the English Language, 4th Edition
1. smaller than microscopic; too small to be seen even with a microscope.
from Wiktionary, Creative Commons Attribution/Share-Alike License