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Glite Dictionary
booster unit

booster unit

5.8
The first part of a rocket that gives a strong push at launch
  • noun
  • /ˈbuːstər ˈjuːnɪt/
  • Specialized
translation icon : unidad de refuerzo
  • The booster unit separated after liftoff as planned, allowing the main rocket to continue into orbit.

Examples

  • NASA's new rocket features two booster units.

  • Engineers checked the booster unit for any signs of damage after the test flight.

  • Each booster unit is designed to burn for just a few minutes before detaching from the main stage.

  • The booster unit ignited at launch.

  • Each booster unit is designed to burn for just a few minutes before detaching from the main stage.

  • The booster unit separated after liftoff as planned, allowing the main rocket to continue into orbit.

  • Engineers checked the booster unit for any signs of damage after the test flight.

Synonyms

booster
vsbooster unit
  • Specialized
30 5.8

The first part of a rocket that gives the strong push to lift it off

is the longer more formal name for the same stage
booster rocket
vsbooster unit
  • Specialized
1 5.3

A large engine that gives a spacecraft its first push and falls off when empty

focuses on supplying initial thrust without stating that it is discarded later
takeoff booster
vsbooster unit
  • Specialized
7.3

The first part of a rocket that gives the strong push needed to lift it off

is used for the stage providing initial thrust for launch in general
takeoff rocket
vsbooster unit
  • Specialized
6.7

A powerful first part of a space vehicle that lifts it off the ground

is the designed source of initial thrust rather than the stage's whole launch duty

How Powerful

booster unit
  • Specialized
5.8
rocket engine
  • Specialized
5 3.6
thruster
  • Specialized
291 7.4

Surface Forms

booster unit singular
booster units plural

Morphology

booster + unit

The meaning is directly compositional: 'booster' denotes something that provides extra thrust and 'unit' denotes a component, so a 'booster unit' is predictably a component that provides initial thrust. This noun–noun compound follows a common, cross-linguistic pattern and would be understandable to a B1 learner who knows both constituent words.

Etymology

Booster unit comes from the image of extra engines attached to the bottom of a rocket that give a strong push at launch and then drop away. That's why the term means 'the first part of a multistage rocket that provides the initial push'.