Computers use many special words. These words help us understand how computers work and what they can do. Below is a comprehensive list of computer-related ‘O’ words and short descriptions. It enables you to build your tech vocabulary.
Computer Terms that start with the Letter O
Here is the list of Computer words that begin with O with Meaning:
| Word | Description |
| Object | A programming concept representing a data structure with properties and methods |
| OOP | Object-Oriented Programming; a programming paradigm based on objects |
| Operating System | Software that manages computer hardware and provides services for computer programs |
| Output | Data produced by a computer program or device |
| Open Source | Software whose source code is freely available for modification and distribution |
| Optical Drive | Device for reading and writing data on optical discs like CDs and DVDs |
| Overclocking | Increasing a computer component’s clock rate to boost performance |
| Overflow | When a calculation produces a result too large for the allocated space |
| OAuth | Open standard for access delegation, commonly used for secure authorization |
| Octal | Base-8 number system, often used in computing |
| OCR | Optical Character Recognition; technology to convert images of text into machine-encoded text |
| OLED | Organic Light-Emitting Diode; a type of display technology |
| Online | Connected to a computer network or the internet |
| Offline | Not connected to a computer network or the internet |
| Optimizer | Software tool that improves performance or efficiency of code or systems |
| OLAP | Online Analytical Processing; technology for quickly analyzing multidimensional data |
| ORM | Object-Relational Mapping; technique for converting data between incompatible type systems |
| OSI Model | Open Systems Interconnection model; conceptual model of networking protocols |
| Overwrite | To replace existing data with new data |
| Obfuscation | Deliberately making source code difficult to understand |
| OWASP | Open Web Application Security Project; organization focused on software security |
| Optical Fiber | Technology used for high-speed data transmission |
| Overflow Error | An error that occurs when a program tries to store more data than a variable can hold |
| OpenGL | Open Graphics Library; API for rendering 2D and 3D graphics |
| Outliner | Software tool for organizing information hierarchically |
| Orchestration | Automated configuration, coordination, and management of computer systems and software |
| OTA | Over-the-air; method of distributing software updates wirelessly |
| OAuth 2.0 | Industry-standard protocol for authorization |
| OpenAI | Artificial intelligence research laboratory |
| Onboarding | Process of integrating a new user into a software system |
| Opcode | Operation Code; part of a machine language instruction that specifies the operation to be performed |
| Operand | Value or variable on which an operation is performed |
| Operator | Symbol used to perform operations in programming languages |
| Optical Mouse | Computer mouse that uses light to detect movement |
| Optical Disk | A storage medium that uses laser light for reading and writing data |
| OpenSSL | Open-source implementation of SSL and TLS protocols |
| Orphaned File | A file that remains on a system but is no longer linked to any program or user |
| Overloading | Defining multiple methods with the same name but different parameters |
| Overlay | The technique of loading program segments into memory when needed |
| One-Time Password | Password that is valid for only one login session or transaction |
| Ontology | Formal representation of a set of concepts within a domain and the relationships between them |
| Open Database | Database management system that allows access from multiple users and applications |
| OpenID | Decentralized authentication protocol |
| Optimization | Process of modifying a system to improve its efficiency or performance |
| Oracle | Major database management system and technology corporation |
| Oscillator | An electronic circuit that produces a periodic signal |
| Out-of-band | Communication that occurs on a separate channel from the main data |
| Outbound | Data or traffic leaving a network or system |
| Outer Join | Type of join operation in databases that include unmatched rows |
| Oversampling | The technique of sampling a signal at a higher rate than necessary to improve resolution or reduce |
