
1) Atom like 2) Imperceptible 3) Infinitesimal 4) Itty 5) Little 6) Microscopical 7) Miniature 8) Minute 9) Precise 10) Small 11) Subgross 12) Teensy 13) Teeny 14) Tiny 15) Wee
Found on
https://www.crosswordclues.com/clue/microscopic

1) Infinitesimal 2) Microscopical 3) Nearly invisible 4) Research 5) Visible under a microscope
Found on
https://www.crosswordclues.com/clue/microscopic

Very small; seen only with the aid of a microscope.
Found on
http://ppathw3.cals.cornell.edu/glossary/Defs_M.htm

• (a.) Alt. of Microscopical
Found on
http://thinkexist.com/dictionary/meaning/microscopic/

Too small to be seen without a microscope.
Found on
http://www.cancer.gov/dictionary?expand=M

Seeing the situation at the particle level: atoms, molecules, or ions.
Found on
http://www.chemicalglossary.net/definition/1081-Microscopic

1. Of extremely small size, visible only by the aid of the microscope. ... 2. Pertaining or relating to a microscope or to microscopy. ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

(mi″kro-skop´ik) of extremely small size; visible only by the aid of a microscope. pertaining or relating to a microscope or to microscopy.
Found on
http://www.encyclo.co.uk/local/21001

Very small; can be seen only with the aid of a microscope.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

(Life processes and cells) extremely small; something which can only be seen through a microscope
Found on
http://www.encyclo.co.uk/visitor-contributions.php

It describes a distinct type of miner`s lung. The distinction from other types of miner`s lung is probably not helpful for the victim or their attending doctor
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Pronunciation: mī′krō-skop′ik, -i-kăl Definitions: 1. Of minute size; visible only with the aid of the microscope. 2. Relating to a microscope.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=55308

Microscopic: So small it cannot be seen without the aid of microscope. As opposed to macroscopic (large enough to be seen with naked eye). A tiny tumor is microscopic while a big tumor is macroscopic.
Found on
http://www.medterms.com/script/main/art.asp?articlekey=4380

Objects or organisms that are too small to be seen with the naked eye.
Found on
http://www.ucmp.berkeley.edu/glossary/gloss5ecol.html

[
adj] - of or relating to or used in microscopy 2. [adj] - extremely precise with great attention to details 3. [adj] - too small to be seen except under a microscope
Found on
http://www.webdictionary.co.uk/definition.php?query=microscopic

microscopic Related 'few, small, less, little' word units: mini-; mio-, meio-; nano-; oligo-, olig-. Related 'metric' families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; milli; nano; pico; femto; atto; zepto; yocto.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1308/4

so small as to be visible only with a microscope
Found on
https://sciencetrek.org/sciencetrek/topics/viruses/glossary.cfm

so small it can only be seen through a microscope
Found on
https://sciencetrek.org/sciencetrek/topics/wetlands/glossary.cfm

Minute object or structures which are invisible or not clearly distinguished without the use of a microscope.
Found on
https://steelforge.com/literature/steelog-the-5000-word-metals-glossary/

Micro comes from the Greek word mikros meaning small. In the everyday world the word microscopic is used to refer to objects that are too small for the unaided eye to see.
Found on
https://www.encyclo.co.uk/local/20687
microscopical adjective too small to be seen except under a microscope
Found on
https://www.encyclo.co.uk/local/20974

tiny; invisible without the aid of a microscope
Found on
https://www.encyclo.co.uk/local/22348

Minute object or structures which are invisible, or not clearly distinguished, without the use of a microscope.
Found on
https://www.metaltek.com/resources/glossary/
No exact match found.