What does "serialize" mean in programming?

serialize is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.

Definition

To convert an in-memory data structure (object, list, etc.) into a format that can be stored or sent over a network, such as JSON or XML. The reverse operation is parsing or deserializing.

Example

"JSON.stringify(data) serializes the object to a JSON string."

Word forms

Form	Type	Meaning	Example
serialize	verb (infinitive)	To convert an object into a format that can be stored or transmitted	"Serialize the response object before sending it over the network."
serialized	past tense	Converted to a storable or transmittable format	"The session data was serialized and stored in a cookie."
serializing	gerund	Converting to a storable or transmittable format	"Serializing circular references causes JSON.stringify() to throw."

Related terms

Ready to practice your English at work?

Lingua-e has interactive exercises built around real developer conversations: standups, code reviews, retrospectives, and more. Practice until it comes naturally.

Try Lingua-e for free