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IT Glossary & Dictionary

44 terms covering Linux, Python, DevOps, Networking, Databases, and more.

Clear definitions and in-depth explanations for beginners and professionals.

All Cloud Computing (35) Databases (51) DevOps (60) Linux (60) Networking (46) Programming Concepts (40) Python (55) Security (40) Web Development (53)
A-Z: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Clear

P

PaaS (Platform as a Service)

Cloud Computing

A cloud service model that provides a platform for developers to build, deploy, and manage applications without managing infrastructure.

Package Manager

Linux

A tool that automates the process of installing, updating, configuring, and removing software packages.

Packer

DevOps

A tool for creating identical machine images for multiple platforms from a single configuration file.

Pandas

Python

A powerful data analysis and manipulation library providing DataFrames and tools for working with structured data.

Partitioning

Databases

A technique of dividing large database tables into smaller, more manageable segments while maintaining a single logical table.

Pathlib

Python

A modern Python module providing an object-oriented interface for filesystem paths, replacing os.path operations.

Penetration Testing

Security

An authorized simulated cyberattack on a system to evaluate its security defenses and identify vulnerabilities.

Phishing

Security

A social engineering attack that uses fraudulent communications to trick people into revealing sensitive information or installing malware.

PHP

Web Development

A widely-used server-side scripting language designed for web development that powers over 75% of websites including WordPress.

Pickle

Python

Python's built-in module for serializing and deserializing Python objects into a byte stream for storage or transmission.

PIP

Python

The standard package installer for Python, used to install and manage third-party libraries from PyPI.

Pipe

Linux

A mechanism that connects the output of one command directly to the input of another, enabling command chaining.

Pipeline as Code

DevOps

Defining CI/CD pipeline configurations as version-controlled code files rather than through UI-based pipeline builders.

Pip Requirements File

Python

A text file listing Python package dependencies with version specifications for reproducible project installations.

PKI (Public Key Infrastructure)

Security

A framework of policies, hardware, and software for creating, managing, distributing, and revoking digital certificates.

Poetry

Python

A modern Python dependency management and packaging tool that handles virtual environments, locking, and publishing.

Port

Networking

A numbered endpoint (0-65535) that identifies specific processes or services on a networked computer for communication.

PostgreSQL

Databases

An advanced open-source relational database known for its reliability, feature richness, and standards compliance.

Postmortem

DevOps

A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.

Prepared Statement

Databases

A pre-compiled SQL template that uses parameters instead of literal values, preventing SQL injection and improving performance.

Primary Key

Databases

A column or set of columns that uniquely identifies each row in a database table.

Principle of Least Privilege

Security

A security principle where users and programs receive only the minimum access rights needed to perform their specific tasks.

Process

Linux

A running instance of a program, with its own memory space, process ID, and system resources.

Procfs (/proc)

Linux

A virtual filesystem in Linux that provides an interface to kernel data structures, exposing process and system information as files.

Progressive Enhancement

Web Development

A web design strategy that starts with basic functionality for all browsers and progressively adds advanced features for capable ones.

Progressive Web App (PWA)

Web Development

A web application that uses modern web capabilities to deliver app-like experiences with offline support and push notifications.

Prometheus

DevOps

An open-source monitoring and alerting toolkit that collects time-series metrics using a pull-based model.

Proxy Server

Networking

An intermediary server that forwards requests between clients and destination servers, providing caching, filtering, or anonymity.

Pydantic

Python

A data validation library that uses Python type annotations to validate and serialize data with automatic error reporting.

Pytest

Python

A testing framework for Python that simplifies writing and running tests with powerful features like fixtures and parametrize.

Python ABC Module

Python

The Abstract Base Classes module that enables defining interfaces and abstract methods that subclasses must implement.

Python Context Variable

Python

A variable that maintains separate values for each execution context, enabling implicit state passing in async code without global variables.

Python Coroutine

Python

A function defined with async def that can be paused and resumed, enabling concurrent execution without threads.

Python Descriptors

Python

Objects that define __get__, __set__, or __delete__ methods, controlling how attribute access works on other objects.

Python Interpreter

Python

The program that reads and executes Python code, translating it into machine instructions at runtime.

Python Iterator Protocol

Python

The interface requiring __iter__() and __next__() methods, enabling objects to be used in for loops and other iteration contexts.

Python Logging Best Practices

Python

Structured approaches to implementing logging in Python applications using the built-in logging module for debugging and monitoring.

Python Metaclass

Python

A class whose instances are classes themselves — the class of a class that controls how classes are created and behaved.

Python Package

Python

A directory containing Python modules and an __init__.py file, providing a way to organize and distribute reusable code.

Python Packaging with Poetry

Python

A modern dependency management and packaging tool for Python that simplifies project setup, versioning, and publishing.

Python Profiling

Python

Measuring where Python code spends time and memory to identify performance bottlenecks and optimization opportunities.

Python Property

Python

A built-in decorator that lets you define methods that behave like attributes, enabling controlled access to instance data.

Python Typing Module

Python

A standard library module providing type hints for function signatures and variables, enabling static analysis without runtime enforcement.

Python Wheel

Python

A built distribution format (.whl) that allows faster installation of Python packages by avoiding the need for compilation.

How Our IT Glossary Helps You

More than just definitions — our glossary is a learning tool that connects concepts to practical resources.

📚 Clear Definitions

Every term has a short definition for quick reference and a detailed explanation for deeper understanding.

🎯 Difficulty Levels

Each term is tagged as Beginner, Intermediate, or Advanced so you know if it matches your current knowledge.

🔗 Linked to eBooks

Terms link to relevant eBooks so you can go from a quick definition to in-depth learning in one click.

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Browse by topic area — filter by category and A-Z letter to find exactly what you need in seconds.

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Frequently Asked Questions

What is the Dargslan IT Glossary?

The Dargslan IT Glossary is a comprehensive dictionary of 44 information technology terms covering 9 categories including Cloud Computing, Databases, DevOps, Linux, Networking, Programming Concepts. Each term includes a clear definition, an in-depth explanation, difficulty level, and links to related eBooks for further learning.

How many terms does the glossary contain?

The glossary currently contains 44 terms across 9 categories. We regularly add new terms to keep the glossary current with the latest technologies and concepts.

Who is this glossary for?

The glossary is designed for anyone working in or learning about IT — from complete beginners encountering unfamiliar terms to experienced professionals looking for precise definitions. Each term includes a difficulty badge (Beginner, Intermediate, or Advanced) so you can find content at your level.

Can I browse terms by category?

Yes. Use the category pills at the top of the glossary to filter terms by topic such as Cloud Computing, Databases, DevOps, Linux, Networking, Programming Concepts. You can also use the A-Z letter filter to jump to terms starting with a specific letter, or combine both filters.

How are glossary terms linked to eBooks?

Many glossary terms are linked to relevant eBooks in our store. When you read a term definition, you will see recommended books that cover that topic in depth — making it easy to go from a quick definition to comprehensive learning.

Is the glossary free to use?

Yes, the entire IT glossary is completely free. Browse, read, and learn from all 44 terms without any registration or payment required.

How do I find a specific term?

You can use the A-Z letter navigation to jump to terms starting with a specific letter, filter by category to narrow results, or use the search bar in the header to find any term by name. Each term has its own dedicated page with a full explanation.