def的意思有防禦、定義等。
1、防禦
def是“定義”define的縮寫；def表示dose effect factor，意思是劑量率效能因數。在許多遊戲裏，為了優化遊戲UI，用DEF這樣的簡稱代指防禦力。這壹數值通常用來指代壹個角色或物體的防禦能力（物理防禦能力），通過某個公式減免或抵消角色或物體受到的傷害。
2、定義
def是“定義”define的縮寫，define是壹個英語單詞，動詞、名詞，作動詞時意為“定義；使明確；規定”，作名詞時意為“（Define）人名；（英）德法恩；（葡）德菲內”，自定義函數通常使用def關鍵字來開始定義。
Def的雙語例句
1、However unlikely&def the slight performance increase might not be worth this risk.
2、Effect of ultra-micro Guipiwan on model rat with both qi and blood def iciency.
3、Lovers of surfing&def sailing and scuba diving flock to the ocean.
4、But don't count on high-def quality TV in a thumb drive just yet.
5、We succeeded to make cerebral infarction model rats of qi-def iciency and blood stasis.
6、I love your big, bright, three-inch screen, your built-in flash, your H.D.M.l.output forhi-def TV sets.
7、lf you like the photo, the high-def, slow-motion video of the clock exploding is evenbetter.
8、lt is a cruel but entertaining prank which does a highly effective job of promoting LG's ultra high-def televisions.
9、The fight for better broadband is important not just so Americans can watch high-def videos of cute cats.
10、Evaluation of Peer Education on Human lmmunodeficiency Virus/Aeguired lmmuneDef iciency Syndrome Among Technical Secondary School Students tA.