Definition

Noun: A process in which two or more atomic nuclei combine to form a single, heavier nucleus, releasing a significant amount of energy in the process. This reaction is the fundamental power source for stars, including the Sun.

Usage

This term is used in scientific contexts, particularly in physics and astronomy, to describe the process that powers stars and is researched as a potential future energy source for humanity. - The primary usage is as a compound noun: "nuclear fusion reaction."

Examples

• The Sun's energy is produced by a nuclear fusion reaction at its core, where hydrogen nuclei fuse into helium.
• Scientists are working to achieve a controlled nuclear fusion reaction on Earth as a clean energy solution.
• The immense heat and pressure required for a nuclear fusion reaction are difficult to replicate in a laboratory.

Advanced Usage

• "To undergo/sustain a nuclear fusion reaction": Describes the process of fusion occurring or being maintained.
  • For a star to shine, it must continuously sustain a nuclear fusion reaction.
• "Initiate/trigger a nuclear fusion reaction": Refers to starting the fusion process.
  • The laser array is designed to trigger a nuclear fusion reaction in the fuel pellet.

Variants and Related Words

• Nuclear fusion (n): Often used synonymously with "nuclear fusion reaction," though it can refer more broadly to the general phenomenon or field of study.
  • Nuclear fusion promises an almost limitless supply of energy.
• Fusion reaction (n): A common abbreviated form.
  • The experiment aims to demonstrate a sustained fusion reaction.
• Thermonuclear fusion (n): A specific type of nuclear fusion reaction that occurs at extremely high temperatures.
  • Thermonuclear fusion is the process that occurs in hydrogen bombs.

Synonyms

• Fusion (in a scientific context)
• Atomic fusion (less common)

Related Phrases

• Cold fusion (n): A hypothesized type of nuclear reaction that would occur at or near room temperature, which remains unproven under accepted scientific principles.
  • The claim of achieving cold fusion was met with widespread skepticism.
• Fusion energy (n): The energy released by a nuclear fusion reaction, pursued as a potential power source.
  • Fusion energy research requires international collaboration.
• Fusion reactor (n): A theoretical or experimental device designed to harness energy from controlled nuclear fusion reactions.
  • Building a practical fusion reactor is one of engineering's greatest challenges.

Noun

1. a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy