Definition
To reduce the strength, amplitude, or intensity of a signal, force, vibration, or wave without changing its essential character.
Plain English
To make something weaker or smaller — quieter, dimmer, or less forceful — while keeping it the same kind of thing.
Context Anchor
Seen in aircraft maintenance discussions about signals, noise, vibration, shielding, insulation, and materials that reduce unwanted energy.
Derivation
From the Latin attenuare, meaning 'to make thin.' The aviation use keeps that idea — you are not removing a signal or force, you are thinning it down so it has less effect.
Why Pilots Care
Many aircraft systems work by deliberately weakening something — a radio signal that is too strong, a vibration that would damage a structure, or a shock load on a landing gear. Recognizing the word lets a technician or pilot understand what a component is actually doing.
Analogy
A wall attenuates sound from the next room. The sound may still be there, but it reaches you weaker than before.
Intuition Check
Attenuate does not usually mean stop completely. It means reduce the strength or intensity.
Example Sentence 1
A shock strut is designed to attenuate the landing impact so that the airframe does not absorb the full force.
Example Sentence 2
Technicians install damping materials to attenuate vibration in the fuselage structure.