microscope

noun

mi·​cro·​scope ˈmī-krə-ˌskōp 

1

: an optical instrument consisting of a lens or combination of lenses for making enlarged images of minute objects

especially : compound microscope

2

: a non-optical instrument (such as one using radiations other than light or using vibrations) for making enlarged images of minute objects

an acoustic microscope

Examples of microscope in a Sentence

Students viewed the crystals through a microscope.

Recent Examples on the Web

Over the following weeks, visible mineral deposits (calcite) began to appear in the crack under the microscope. —Srishti Gupta, Interesting Engineering, 31 Mar. 2026

Once listed at 6 feet, Rojas is now suddenly listed at 5-foot-10 — reflecting his true height, much like the hundreds of ballplayers who shrunk under the microscope of MLB’s strict and standardized new measuring system, one far more accurate than the loose and relaxed ways of the past. —Sam Blum, New York Times, 30 Mar. 2026

At the very least NESN did a better job designing its new scorebug than the one Netflix used on its Opening Night broadcast, where viewers needed a microscope to read the pitcher and batters’ names, the pitch count and pretty much everything else outside of the score. —Mac Cerullo, Boston Herald, 29 Mar. 2026

Each statue is paired with objects related to the honoree’s work — from soccer balls to microscopes and drawing boards — along with a QR code linking to videos and images about their careers. —Miriam Fauzia, Dallas Morning News, 28 Mar. 2026

Word History

Etymology

New Latin microscopium, from micr- + -scopium -scope

First Known Use

1648, in the meaning defined at sense 1

Phrases Containing microscope

• atomic force microscope
• compound microscope
• dark-field microscope
• dissecting microscope
• electron microscope
• phase-contrast microscope
• put under the microscope
• scanning electron microscope
• scanning tunneling microscope
• under a/the microscope

Rhymes for microscope

• antelope
• bronchoscope
• cantaloupe
• cystoscope
• endoscope
• envelope
• epitope
• gyroscope
• horoscope
• isotope
• misanthrope
• pericope

Kids Definition

microscope

noun

mi·​cro·​scope ˈmī-krə-ˌskōp 

1

: an optical instrument consisting of a lens or a combination of lenses for making enlarged or magnified images of minute objects

2

: an instrument using radiation other than light for making enlarged images of very small objects

Medical Definition

microscope

noun

mi·​cro·​scope ˈmī-krə-ˌskōp 

1

: an optical instrument consisting of a lens or combination of lenses for making enlarged images of minute objects

especially : compound microscope see light microscope, phase-contrast microscope, polarizing microscope, reflecting microscope, ultraviolet microscope

2

: an instrument using radiations other than light or using vibrations for making enlarged images of minute objects

an acoustic microscope

see electron microscope, scanning electron microscope, x-ray microscope