definiens
/dɪˈfɪnɪənz/noun
(pl.definientia /dɪˌfɪnɪˈentʃə/)
- a word, phrase, or symbolic expression used to define something, especially in a dictionary entry, or introducing a word or symbol into a logical system by providing a statement of its meaning（尤指词典中）下定义用的词语。与DEFINIENDUM相对。
词源
late 19th cent.: from medieval Latin， 'defining'， present participle of definire （see DEFINE）.