preventive

名词 preventive:

1. remedy that prevents or slows the course of an illness or disease
   同义词：preventative, prophylactic
2. any obstruction that impedes or is burdensome
   同义词：hindrance, hinderance, hitch, preventative, encumbrance, incumbrance, interference
3. an agent or device intended to prevent conception
   同义词：contraceptive, preventative, contraceptive device, prophylactic device, birth control device

形容词 preventive:

1. preventing or contributing to the prevention of disease
   同义词：preventative, prophylactic
2. tending to prevent or hinder
   同义词：preventative
3. tending to ward off- Victor Schultze
   同义词：cautionary, prophylactic

1. Something, such as a ritual practice or sacred object, believed to control natural or supernatural powers or serve as a preventive or remedy.
   巫术，魔力被认为是控制着自然或超自然力量的东西或是可以作为预防性药物或治疗物的东西，例如宗教仪式或圣物
2. We had to take preventive measures.
   我们不得不采取预防措施。
3. Please take some preventive medicine now.
   请吃些预防药吧。

pre.ven.tive

adj.（形容词）
Intended or used to prevent or hinder; acting as an obstacle:
预防的：打算或用来预防或阻止的；作为障碍的：
例句：
preventive measures.
预防措施

Carried out to deter expected aggression by hostile forces.
防止的：实施以用来防止敌对势力有可能的进攻的
Preventing or slowing the course of an illness or a disease; prophylactic:
防病的：预防或延缓病情发展的；预防性的：
例句：
preventive medicine; preventive health care.
预防药，预防性保健

n.（名词）
Something that prevents; an obstacle.
预防物：起预防作用的东西；阻碍
Something that prevents or slows the course of an illness or disease.
预防药，预防法，预防措施：预防或延缓病情发展的药品，方法或措施

【引伸】
preven.tively
adv.（副词）
preven.tiveness
n.（名词）