New American Oxford Dictionary
definiendum
de fin i en dum |diˌfinēˈendəm dɪˌfɪniˈɛndəm | ▶noun ( pl. definienda |-də | ) a word, phrase, or symbol that is the subject of a definition, esp. in a dictionary entry, or that is introduced into a logical system by being defined. Contrasted with definiens. ORIGIN late 19th cent.: from Latin, ‘that which is to be defined, ’ from the verb definire (see define ).
Oxford Dictionary
definiendum
definiendum |dɪˌfɪnɪˈɛndəm | ▶noun ( pl. definienda ) a word, phrase, or symbol which is the subject of a definition, especially in a dictionary entry, or which is introduced into a logical system by being defined. Contrasted with definiens. ORIGIN late 19th cent.: from Latin, ‘that which is to be defined ’, from the verb definire (see define ).
Duden Dictionary
Definiendum
De fi ni en dum Substantiv, Neutrum , das |Defini e ndum |das Definiendum; Genitiv: des Definiendums, Plural: die Definienda lateinisch definiendum, Gerundivum von: definire, definieren Begriff, der bestimmt werden soll; das, was definiert wird