different between fluctuation vs attenuation

English

Etymology

Borrowed from Latin fluctuati?nem, accusative singular of fluctuati?, from fluctu?, from fluctus.Morphologically fluctuate +? -ion

Pronunciation

• IPA^(key): /fl?kt?u??e???n/
• Rhymes: -e???n

Noun

fluctuation (countable and uncountable, plural fluctuations)

1. A motion like that of waves; a moving in this and that direction.

   the fluctuations of the sea

2. A wavering; unsteadiness.

   fluctuations of opinion

   fluctuations of prices

3. In medicine, a wave-like motion or undulation of a fluid in a natural or abnormal cavity (e.g. pus in an abscess), which is felt during palpation or percussion.

Related terms

• fluctuate

Translations

French

Etymology

Borrowed from Latin fluctuati?nem, accusative singular of fluctuati?, from fluctu?, from fluctus.

Pronunciation

Noun

fluctuation f (plural fluctuations)

1. fluctuation

Related terms

• fluctuer

Further reading

• “fluctuation” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Etymology

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

Pronunciation

• Rhymes: -e???n

Noun

attenuation (countable and uncountable, plural attenuations)

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

Derived terms

Related terms

• attenuate
• tenuous
• thin

Translations