Fuel

Definition

Fuel is a noun and verb. As a noun, it refers to a substance used to produce energy, especially through combustion. As a verb, it describes the act of supplying energy or stimulating a reaction or activity.

Parts of Speech

• Noun
• Verb

Pronunciation

American English

• IPA Pronunciation: /ˈfjuːəl/ or /ˈfjʊəl/
• Respelling: FYOO-uhl or FYOO-l

British English

• IPA Pronunciation: /ˈfjʊəl/
• Respelling: FYOO-uhl

Etymology

The word "fuel" originates from Old French "feu," meaning "fire," derived from Latin "focus," meaning "hearth or fireplace." It evolved to describe materials used to sustain fire and, by extension, sources of energy in general.

Derivatives

• Fueled (verb, past tense)
• Fueling (verb, present participle)
• Refuel (verb)
• Fueler (noun)
• Fuel-efficient (adjective)

Synonyms

• Energy
• Power
• Combustible

Antonyms

• Exhaustion
• Depletion
• None

Usage

The term "fuel" is used in contexts involving energy production, motivation, or stimulation. For example, "The car runs on diesel fuel," or "Her speech fueled enthusiasm among the audience."

Related Terms

• Energy: The capacity to perform work or produce heat.
• Combustion: The process of burning a substance to release energy.
• Power: The ability or capacity to do work, often derived from fuel.

Detailed Definitions

Noun

• A material used to produce energy: Refers to substances such as coal, gas, or oil used to power engines or provide heat.
  • Example: "Wood was the primary fuel for heating in ancient times."
• A stimulus for a reaction or activity: Describes anything that promotes or sustains action.
  • Example: "The controversy served as fuel for the ongoing debate."

Verb

• To supply energy to a system: Refers to providing fuel to machines or processes.
  • Example: "The generator was fueled with diesel."
• To stimulate or intensify an action or process: Describes causing an increase in intensity or activity.
  • Example: "The coach’s words fueled the team’s determination."