defineKK [dɪˋfaɪn] /dɪˈfaɪn/發音de- 向下、除去+fine 結束、界限→向下定出界限展開收合de-字首向下、除去fine字根結束、界限字面：向下定出界限把界限劃清楚 → 說明一個詞或事物的確切含義動詞1定義、解釋Can you define the word without using a dictionary?你能不查字典就定義這個詞嗎？2界定、劃定、明訂The contract clearly defines each partner's responsibilities.合約明確界定了每位合夥人的責任。3使具特色、決定That one decision defined the rest of her career.那個決定左右了她後來的整個職涯。4使輪廓分明、顯出輪廓The morning light defined the mountains against the sky.晨光讓群山的輪廓在天空映襯下格外清晰。5定義、宣告電腦You have to define the variable before using it in the loop.在迴圈中使用這個變數之前，必須先定義它。