attenuate
Concise Oxford English Dictionary © 2008 Oxford University Press:
attenuate /əˈtɛnjʊeɪt/
▶verb
- 1 reduce the strength, effect, or value of.
- 2 make thin or thinner.
– derivatives
attenuation noun.
attenuation noun.
– origin C16 (earlier (ME) as attenuation): from L. attenuat-, attenuare ‘make slender’.
'attenuate' also found in these Oxford entries:

