1the process of changing or causing something to change from one form to another:the conversion of food into body tissues
the adaptation of a building or part of a building for a new use:the conversion of a house into flats [count noun]:they were carrying out a loft conversion
[count noun]British a building that has been adapted for a new use:high-quality cottages and barn conversions
Law the changing of real property into personalty, or of joint into separate property, or vice versa.
Logic the transposition of the subject and predicate of a proposition according to certain rules to form a new proposition by inference.
2the fact of changing one’s religion or beliefs or the action of persuading someone else to change theirs:he insists that real conversion is a matter of the heart [count noun]:his passion for seventeenth-century literature had led the former atheist to a sudden conversion
Christian Theology repentance and change to a godly life:the individual’s responsibility in conversion is to repent and believe
3 [count noun] Rugby a successful kick at goal after a try, scoring two points:Gavin Hastings landed one penalty and one conversion
American Football an act of converting a touchdown or a down.
4 (also conversion rate) (in the context of online marketing) the proportion of people viewing an advertisement and going on to buy the product, click on a link, etc.:you’ll see better conversion rates for your local advertising if you include your physical address on your websitekeeping things simple will improve conversion
5 Law the action of wrongfully dealing with goods in a manner inconsistent with the owner’s rights:he was found guilty of the fraudulent conversion of clients' monies
6 Psychiatry the manifestation of a mental disturbance as a physical disorder or disease: [as modifier]:conversion disorders