OOP
Abbreviation with 3 meanings
| Stands for | Out-of-pocket |
|---|---|
| Meanings | 3 |
| Categories | Medical, Technology & Computing, Arts & Entertainment |
OOP has three meanings. The most common are Out-of-pocket (health insurance) and Object-oriented programming (programming); it can also stand for Out of print.
Meanings of OOP at a glance
| # | OOP stands for | Context |
|---|---|---|
| 1 | Out-of-pocket | Medical › Health Insurance |
| 2 | Object-oriented programming | Technology & Computing › Programming |
| 3 | Out of print | Arts & Entertainment › Publishing and Book |
1. Out-of-pocket
Medical · Health Insurance Abbreviations
Health care costs paid by the patient rather than the insurer, such as deductibles, copays and coinsurance, plus services the plan does not cover. Plans cap annual in-network cost sharing at an out-of-pocket maximum, after which the plan pays 100 percent of covered care.
Example: Hit my OOP max in July after the surgery, so everything else is covered this year.
The ACA caps in-network out-of-pocket maximums on most plans and adjusts the cap annually; for 2026 it is US$10,600 for an individual and US$21,200 for a family. Premiums, out-of-network charges and non-covered services do not count toward the maximum. The maximum itself is often written OOPM or MOOP.
2. Object-oriented programming
Technology & Computing · Programming Abbreviations
A programming paradigm that organizes code into objects combining data (fields) and behavior (methods), usually defined by classes. Its core ideas are encapsulation, inheritance and polymorphism, and Java, C#, C++, Python and Ruby all support it.
Example: The course covers OOP in Java: classes, interfaces, inheritance and polymorphism.
Simula 67, developed in Norway by Ole-Johan Dahl and Kristen Nygaard, introduced classes and objects, and Alan Kay coined "object-oriented" for Smalltalk at Xerox PARC in the 1970s. Critics argue that deep inheritance hierarchies make code rigid, leading to the advice "favor composition over inheritance". Usually contrasted with functional and procedural programming.
3. Out of print
Arts & Entertainment · Publishing and Book Abbreviations
Status of a book that the publisher no longer prints or sells new. Authors' contracts often let rights revert to them when a book goes out of print.
Example: The book has been OOP for a decade, so used copies sell for $80.
Print-on-demand and e-books make "out of print" harder to define, so modern contracts set sales thresholds instead. In programming OOP means object-oriented programming.
Related abbreviations
More health insurance abbreviations
- NPI – National Provider Identifier
- NSA – No Surprises Act
- OEP – Open enrollment period
- OON – Out-of-network
- OPPS – Outpatient Prospective Payment System
- PACE – Program of All-Inclusive Care for the Elderly
- Par – Participating (provider)
- PDP – Prescription drug plan (Medicare Part D)
See all 107 health insurance abbreviations →
More programming abbreviations
- NoSQL – Not only SQL
- NPE – NullPointerException
- npm – npm (often expanded as Node Package Manager)
- OOM – Out of memory
- ORM – Object-relational mapping
- OS – Operating system
- PAT – Personal access token
- PCRE – Perl Compatible Regular Expressions
See all 154 programming abbreviations →
This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.