verb co·in·cide \ ˌkō-ən-ˈsīd , ˈkō-ən-ˌsīd \
|Updated on: 10 Aug 2018

Definition of coincide

coincided; coinciding
1 a : to occupy the same place in space or time
  • The base of the triangle coincides with one side of the square.
  • The heroic age of bridge construction coincided with the expansion of the railroads …
  • —Mario Salvadori
b : to occupy exactly corresponding or equivalent positions on a scale or in a series
  • 100° Celsius coincides with 212° Fahrenheit.
2 : to correspond in nature, character, or function
  • " … our sentiments coincided in every particular … "
  • —Jane Austen
3 : to be in accord or agreement : concur
  • She coincided with his views on most subjects.

Examples of coincide in a Sentence

  1. The goals of the business partners coincide.

  2. the heaviest snowfall of the season coincided with the start of our weeklong ski vacation

Recent Examples of coincide from the Web

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

Origin and Etymology of coincide

borrowed from Medieval Latin coincidere "to be identical in substance, agree in position," from Latin co- co- + incidere "to fall or drop (into), come by chance, chance to happen" — more at 1incident

Synonym Discussion of coincide

agree, concur, coincide mean to come into or be in harmony regarding a matter of opinion. agree implies complete accord usually attained by discussion and adjustment of differences.
    • on some points we all can agree
concur often implies approval of someone else's statement or decision.
    • if my wife concurs, it's a deal
coincide, used more often of opinions, judgments, wishes, or interests than of people, implies total agreement.
    • their wishes coincide exactly with my desire

COINCIDE Defined for English Language Learners


Definition of coincide for English Language Learners

  • : to happen at the same time as something else

  • : to agree with something exactly : to be the same as something else

COINCIDE Defined for Kids


verb co·in·cide \ ˌkō-ən-ˈsīd \

Definition of coincide for Students

coincided; coinciding
1 : to happen at the same time
  • The band's performance is scheduled to coincide with the fireworks.
2 : to agree exactly
  • Their goals coincided.
3 : to occupy the same space
  • The edges of the wallpaper must coincide.

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