1. (

• microscopic ,
• microscopical

) of or relating to or used in microscopy; "microscopic analysis"; "microscopical examination" ;

2. (

• microscopic ,
• microscopical

) visible under a microscope; using a microscope ;

3. (

• microscopic

) extremely precise with great attention to details; "examined it with microscopic care" ;

4. (

• microscopic ,
• microscopical

) so small as to be invisible without a microscope; "differences were microscopic" ;