prophylactic
Longman Dictionary of Contemporary English 5++LDOCE 5++pro·phy·lac·tic1 /ˌprɒfəˈlæktɪk◂ $ ˌprɑː-/ adjective technical MHintended to prevent disease 预防〔疾病〕的 prophylactic antibiotics 预防性抗生素
Examples from the Corpus
prophylactic• The prophylactic anthelmintic regimens practised for Ostertagia or Haemonchus are usually sufficient to control this parasite.• Treatment consists of sedation with haloperidol or other medication, prophylactic antibiotics, and rest.• Such was the perceived risk of a patient developing cancer that prophylactic colectomy has been recommended.• And prophylactic drug use soared, particularly in the black community.• Monamine oxidase inhibitors are used occasionally in migraine patients who are refractory to other prophylactic drugs.• One must be realistic about the goal of prophylactic therapy.prophylactic2 noun [countable] 1. MI technical something used to prevent disease 预防疾病的东西2. American EnglishXX formal a condom – often used humorously 避孕套〔常为幽默用法〕Examples from the Corpus
prophylactic• Down at the tideline an island boy and his younger brother played with a handful of their own certified prophylactics.• He hissed those words under his breath, your friend, his fingers digging mindlessly into the clear plastic packets of prophylactics.Origin prophylactic1 (1500-1600) Greek prophylaktikos, from prophylassein “to guard before”, from phylax “guard”pro·phy·lac·tic1 adjectiveprophylactic2 nounChineseSyllable
to Corpus intended disease prevent
prophylactic
pro‧phy‧lac‧tic1 /ˌprɒfəˈlæktɪk◂, ˌprɒfɪˈlæktɪk◂ $ ˌprɑː-/ 
adjective technical
prophylactic antibiotics
prophylactic2 noun [countable]
1. technical something used to prevent disease
2. American English formal a condom – often used humorously
| I |
adjective technical Date: 1500-1600
Language: Greek
Origin: prophylaktikos, from prophylassein __to guard before__, from phylax __guard__
intended to prevent disease:Language: Greek
Origin: prophylaktikos, from prophylassein __to guard before__, from phylax __guard__
| II |
noun [countable]1. technical something used to prevent disease
2. American English formal a condom – often used humorously