at·ten·u·ate
(ə-tĕńyōō-āt́)
[Latin attenuāre, attenuāt-, ad-, ad-, + tenuāre, to make thin (from tenuis, thin; see ten-).]
verb: -at·ed, -at·ing, -ates.
transitive verb
- To make slender, fine, or small: The drought attenuated the river to a narrow channel.
- To reduce in force, value, amount, or degree; weaken: Medicine attenuated the fever's effect.
- To lessen the density of; rarefy.
- Biology To make (bacteria or viruses) less virulent.
- Electronics To reduce (the amplitude of an electrical signal) with little or no distortion.
intransitive verb
- To become thin, weak, or fine.
adjective
- Reduced or weakened, as in strength, value, or virulence.
- Botany Gradually tapering to a slender point.
derivatives
- at·teńu·átion
- noun