definiendum [ dih-fin-ee-en-duh m ]
noun, plural de·fin·i·en·da [dih-fin-ee-en-duh].
1. something that is or is to be defined, especially the term at the head of a dictionary entry.
2. Logic. an expression to be defined in terms of another expression previously defined.
Origin: 1870–75; < Latin dēfīniendum, neuter gerund of dēfīnīre; see define
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