different between attenuation vs attenuance

English

From Middle English attenuacioun, a borrowing from Latin attenu?ti? (“a diminishing”). Equivalent to attenuate +? -ion.

attenuation (countable and uncountable, plural attenuations)

A gradual diminishing of strength.
(physics) A reduction in the level of some property with distance, especially the amplitude of a wave or the strength of a signal.
(biology) A weakening in the virulence of a pathogen or other microorganism.
(botany) The tapering of a leaf etc to a fine point.
(engineering) A fabrication process in which a material is stretched out into a thin shape.
(homeopathy) The reduction of the active principles of medicines to minute doses.
(brewing) The proportion of sugar that is converted to ethanol by a yeast.

attenuance (plural attenuances)

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