The quality, state, or degree of being variable or changeable
Apt or liable to vary or change
"Fluxuation" is a non-word, an unacceptable misspelling of the proper word, "fluctuation". The roots of "fluctuate" and "flux" are, of course, the same; however, the verb form used to mean "to be in flux or to exhibit variability" is "fluctuate". There is no verb form spelled with an "x".
Rainfall variability refers to the fluctuations and changes in the amount, intensity, and distribution of rainfall over a specific area and time period. It describes the natural variation in precipitation patterns that can occur from year to year or within a single season, impacting water availability, agriculture, and ecosystems.
The dictionary definition of a word
what is the definition of word-processing package
The definition of something describes exactly what the word is and how the word can be used. You will also see synonyms for the word and if the word is a noun or adjective when viewing the definition.
Climate variability is unknown
a definition of a compound word is jack-ass.
The word that goes with that definition is "door."
The definition of the word cited is quote as evidence for or justification of an argument or statement. Another definition for the word cited is mention as an example.
That word has no definition in English.
The word Lululemon Athletica has a definition. The word (words) have no definition, but instead are a name of a yoga athletic gear. The word Lulemon Athletica has no definition.