air-balloon

A colorful air-balloon floats gently over a green valley.

Definition

1. Noun:
   • A lighter-than-air aircraft: "air-balloon" refers to a type of aircraft that rises and floats in the atmosphere due to being filled with a gas (such as hot air or helium) that is lighter than the surrounding air. It typically consists of a large bag (the envelope) and a basket or gondola for passengers or cargo.
   • Note: This term is less common than "hot-air balloon" or "balloon" in everyday usage, but it specifically denotes the general category of such aircraft.

Usage Examples

• Noun:
  • The children watched an air-balloon rise slowly into the sky. (A lighter-than-air aircraft ascending.)
  • We took a ride in an air-balloon over the countryside. (We traveled in an aircraft that floats using lighter-than-air gas.)

Advanced Usage

• "to go up in an air-balloon": to travel or ascend using this type of aircraft.

  • They decided to go up in an air-balloon for their anniversary. (They chose to take a ride in a lighter-than-air aircraft.)

• "air-balloon festival": an event where multiple such aircraft are inflated, displayed, and sometimes raced.

  • The annual air-balloon festival attracted thousands of visitors. (An event featuring many lighter-than-air aircraft.)

• "air-balloon basket": the compartment attached below the envelope for carrying people or equipment.

  • The air-balloon basket was woven from wicker. (The passenger compartment of the lighter-than-air aircraft.)

Variants and Related Words

• Hot-air balloon (n): a specific type of air-balloon that uses heated air to achieve lift.

  • The hot-air balloon glowed brightly at night. (A type of air-balloon relying on heated air.)

• Balloon (n): a shorter, more common term for any air-balloon or inflatable object.

  • The balloon drifted over the hills. (A general term for a lighter-than-air aircraft or inflatable toy.)

• Air-ballooning (n): the activity or sport of flying in an air-balloon.

  • Air-ballooning is a peaceful way to see the landscape. (The sport of piloting lighter-than-air aircraft.)

Synonyms

• Aerostat: a technical term for any lighter-than-air aircraft, including air-balloons.
• Balloon: the most common synonym for this type of aircraft.
• Dirigible (partial): a steerable airship, which is a related but different type of lighter-than-air aircraft (usually powered and steerable, unlike a typical air-balloon).

Phrasal Verbs

• However, the verb "to balloon" (meaning to swell or expand) is related:
  • To balloon: to swell out like a balloon.
  • The sails ballooned in the wind. (The sails expanded outward.)

Related Idioms

• None specific to "air-balloon" itself. However, the word "balloon" appears in idioms:

  • When the balloon goes up: when a situation becomes serious or an event begins.
  • When the balloon goes up, everyone will need to be ready. (When the crisis or event starts.)

• Go down like a lead balloon: to be received very poorly by an audience.

  • His joke went down like a lead balloon. (The joke was not well received.)