It's when something mathematical is taking action.
Yes, the word 'define' is a verb. The noun form would be 'definition'.
"Define" is a verb. ex: "How does one define love?"; "She has well defined features." "Definition" is the associated noun.
The word define is a verb. The past tense is defined.
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NO it's a verb
formula
The answer is Equation!
Formula
Yes, it is a form of the verb "to characterize" (to portray, to define). It is the past tense and past participle of the verb.
define -verb definition-noun defined-noun defines-verb definable-adjective
The noun forms of the verb to define are definition and the gerund, defining.
The corresponding noun to the verb define is definition