mi·​cro·​scop·​ic | \ ˌmī-krə-ˈskä-pik How to pronounce microscopic (audio) \
variants: or less commonly microscopical \ ˌmī-​krə-​ˈskä-​pi-​kəl How to pronounce microscopical (audio) \

Definition of microscopic

1 : resembling a microscope especially in perception
2a : invisible or indistinguishable without the use of a microscope
b : very small or fine or precise
3 : of, relating to, or conducted with the microscope or microscopy

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Other Words from microscopic

microscopically \ ˌmī-​krə-​ˈskä-​pi-​k(ə-​)lē How to pronounce microscopically (audio) \ adverb

Examples of microscopic in a Sentence

At this point, the embryo is a microscopic clump of only 100 cells. There is a microscopic crack in the diamond. He has a microscopic attention span. He recorded every aspect of his trip in microscopic detail. a microscopic study of plant tissues
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Recent Examples on the Web Plugable: Take an extra $9 off the brand's USB 2.0 Digital Microscope, perfect for students or anyone interested in the microscopic world. Staff, CNN Underscored, "Black Friday 2019: All the best deals you can shop today," 29 Nov. 2019 But because no fiber is perfectly transparent, some tiny amount of light will always scatter, bouncing back toward shore off microscopic flaws in the glass. Wired, "Scientists Spot an Undersea Fault Using Fiber-Optic Cables," 28 Nov. 2019 But Spear isn’t concerned with just plastic pollution – the microscopic pieces that end up in our fish and our drinking water. Laura Johnston, cleveland, "Lake Erie paddler Stefanie Spear to sail on all-women eXXpedition to spotlight plastic pollution," 26 Nov. 2019 While Wingert was released from the hospital on Tuesday, Khan said there were still microscopic pieces of the cancer that will need to be treated separately from the surgery. Fox News, "New Jersey man has tumor size of his head removed from neck," 13 Nov. 2019 Their daily buffet of germs provides their immune systems with thorough intel on countless microscopic enemies. Beth Mole, Ars Technica, "Here’s how measles wipes out the immune system’s memory," 6 Nov. 2019 Whale excrement is so rich in iron and nitrogen that whale bowel movements trigger blooms of microscopic phytoplankton. Ben Guarino, Anchorage Daily News, "Living whales are worth an enormous amount of money," 4 Nov. 2019 The microscopic red-tide causing phytoplankton known as Karenia brevis tested positive in very low to high concentrations in Lee County, and background to high concentrations in Collier County. Joe Mario Pedersen, orlandosentinel.com, "Red tide continues to roll through southwest Florida coasts," 24 Oct. 2019 One last glimpse Little things, big pictures: This portrait of a embryonic turtle was taken from hundreds of stacked and stitched together images—and became a winner of Nikon’s Small World 2019 contest for microscopic images. National Geographic, "How to mix style and sustainability," 23 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microscopic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of microscopic

circa 1672, in the meaning defined at sense 1

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Time Traveler for microscopic

Time Traveler

The first known use of microscopic was circa 1672

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Statistics for microscopic

Last Updated

2 Dec 2019

Cite this Entry

“Microscopic.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/microscopic. Accessed 15 December 2019.

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How to pronounce microscopic (audio)

English Language Learners Definition of microscopic

: able to be seen only through a microscope : extremely small
: much smaller than what is usual, normal, or expected
: done with a microscope


mi·​cro·​scop·​ic | \ ˌmī-krə-ˈskä-pik How to pronounce microscopic (audio) \

Kids Definition of microscopic

1 : of, relating to, or conducted with the microscope a microscopic examination
2 : so small as to be visible only through a microscope : very tiny a microscopic crack

Other Words from microscopic

microscopically \ -​pi-​kə-​lē \ adverb


mi·​cro·​scop·​ic | \ ˌmī-krə-ˈskäp-ik How to pronounce microscopic (audio) \
variants: or microscopical \ -​i-​kəl How to pronounce microscopical (audio) \

Medical Definition of microscopic

1 : of, relating to, or conducted with the microscope or microscopy
2 : so small or fine as to be invisible or indistinguishable without the use of a microscope — compare macroscopic, submicroscopic, ultramicroscopic sense 1

Other Words from microscopic

microscopically \ -​i-​k(ə-​)lē How to pronounce microscopically (audio) \ adverb

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Comments on microscopic

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