noun, plural: amplifiers
(general) Anything that amplifies, enlarges, or making something larger or more intense.
(microscopy) A lens system or a device placed above the ocular to improve the depth resolution of an image while the objective is still in the position of best-corrected image.
Word origin: MF amplifier < L amplificāre (to increase, augment).
Related forms: amplify (verb), amplification (noun).