con·​ver·​sion | \kən-ˈvər-zhən, -shən\

Definition of conversion 

1 : the act of converting : the process of being converted

2 : an experience associated with the definite and decisive adoption of a religion

3a : the operation of finding a converse in logic or mathematics

b : reduction of a mathematical expression by clearing of fractions

4 : a successful attempt for a point or points especially after a touchdown or for a first down a 2-point conversion a third-down conversion

5 : something converted from one use to another

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Other Words from conversion

conversional \kən-​ˈvərzh-​nəl; -​ˈvər-​zhə-​, -​ˈvər-​shnəl, -​shə-​nᵊl \ adjective

Examples of conversion in a Sentence

The company is undergoing a conversion to a new computer system. They have suggested conversion of the old school into apartments. Conversion to gas heating will continue over the next few years. a conversion from Catholicism to Judaism He is thinking about conversion to Buddhism.
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Recent Examples on the Web

That was Seattle’s third-down conversion rate last week, which all involved cited as one issue in getting the running game going. Bob Condotta, The Seattle Times, "What to watch for when the Seahawks play the Chicago Bears on Monday night," 16 Sep. 2018 Also, don’t miss out on new indoor shower designs from custom van conversion companies for ideas. Megan Barber, Curbed, "RV toilets: 5 alternatives to a full bathroom in your camper," 9 Nov. 2018 The conversion process involved upgrading older M4s to the M4A1PIP (Product Improvement Program) standard and buying brand-new M4A1s. Kyle Mizokami, Popular Mechanics, "The Army is Finally Fixing Its Rifles That Could Fire Without Pulling the Trigger," 26 Sep. 2018 The apartment is a ’70s attic conversion overlooking the water. Kathleen Renda, House Beautiful, "This Icelandic Apartment Is Filled With Small-Space Inspiration," 16 Aug. 2018 Her quote is in reference to another gay conversion therapy narrative movie, Boy Erased, which stars Lucas Hedges and Nicole Kidman, and is directed by Joel Edgerton. Emily Wang, Teen Vogue, "Chloë Grace Moretz Called Out Hollywood for Treating "Boy Erased" Differently Than "The Miseducation of Cameron Post"," 3 Aug. 2018 Lawrenceville’s two-way conversion of Perry Street and Clayton Street is set to begin the transition on July 9. Karen Huppertz, ajc, "Lawrenceville to begin downtown two-way street conversion," 6 July 2018 The film follows the genesis of this project and Reynolds’s conflicted conversion from devout Mormon with misgivings about the church’s LGBTQ policies to an activist committed to changing the church from within. Peter Keough,, "In Focus: ‘Believer’ aims to convert the faithful," 21 June 2018 New Associated Bank credit cards will be issued shortly after conversion to replace Bank Mutual credit cards. Paul Gores, Milwaukee Journal Sentinel, "Bank Mutual set to switch to Associated Bank this weekend," 20 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'conversion.' 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 conversion

14th century, in the meaning defined at sense 1

History and Etymology for conversion

Middle English, from Anglo-French, from Latin conversion-, conversio, from convertere

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Last Updated

6 Dec 2018

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Time Traveler for conversion

The first known use of conversion was in the 14th century

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English Language Learners Definition of conversion

: the act or process of changing from one form, state, etc., to another

: the act or process of changing from one religion, belief, political party, etc., to another

: a successful attempt at scoring extra points in rugby or American football


con·​ver·​sion | \kən-ˈvər-zhən \

Kids Definition of conversion

1 : the act of changing : the process of being changed They've finished the conversion of the old school into an apartment building.

2 : a change of religion


con·​ver·​sion | \kən-ˈvər-zhən, -shən \

Medical Definition of conversion 

1 : the transformation of an unconscious mental conflict into a symbolically equivalent bodily symptom

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con·​ver·​sion | \kən-ˈvər-zhən \

Legal Definition of conversion 

1a : the act of changing from one form or use to another

b : the act of exchanging one kind of property for another especially : the act of exchanging preferred stocks or bonds for shares of common stock of the same company usually at a preset ratio or price and at a preset time

equitable conversion

: the constructive conversion of real property into personal property especially as a result of a contract for sale of land or testamentary instructions to sell real estate and divide the proceeds

Note: Equitable conversion is a legal fiction under which the seller of a real property becomes, upon the execution of a contract for the sale of the property, the owner of personal property in the form of legal title to the property that secures payment of the purchase price. The purchaser is deemed to be the holder of equitable title in and owner of the real property, having the rights and being subject to the liabilities that attend that status. In the case of a will in which a property owner authorizes the sale of real property and distribution of the proceeds, the property transforms into personalty by equitable conversion upon the owner's death.

involuntary conversion

: the conversion of property into other property as compensation for the theft, destruction, seizure, requisition, or condemnation of the original property

Note: For income tax purposes, involuntary conversions are generally taxable, and the gain or loss is computed by offsetting the basis of the property against the compensation received (as from insurance).

2 : the crime or tort of interfering with the ownership of another's movable or personal property without authorization or justification (as a lien) and especially of depriving the owner of use and possession — see also fraudulent conversion

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Comments on conversion

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a soft lustrous wool fabric with mohair

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