disinfection

disinfection — noun

1. killing germs, viruses, and other tiny disease-causing organisms on surfaces, ob

1.nounB2
Definition

killing germs, viruses, and other tiny disease-causing organisms on surfaces, objects, or skin by applying chemical substances

Example

Hospital staff carried out a thorough disinfection of all patient rooms after the outbreak.

thorough disinfection of [location]

The WHO recommends regular disinfection of frequently touched surfaces like door handles.

regular disinfection of [object]

Common collocations
  • thorough disinfection
  • regular disinfection
  • chemical disinfection
  • surface disinfection
  • hand disinfection
  • water disinfection
Synonyms
  • sanitisation

    less thorough — reduces germs to a safe level rather than killing all of them; common in food and childcare settings

  • sterilisation

    more thorough — destroys ALL microorganisms including bacterial spores; used in surgery and laboratories

  • cleaning

    broader — removes dirt and some germs but does not necessarily kill microorganisms with chemicals

Antonyms
  • contamination

    the introduction of harmful microorganisms to a surface or substance

Usage Note

Uncountable noun in standard use. In formal or technical writing, countable uses such as 'a disinfection procedure' or 'three rounds of disinfection' are acceptable. Distinguish from 'cleaning' (removing dirt, not necessarily killing germs) and 'sterilisation' (killing all microorganisms including spores).

Common Mistakes

I bought a disinfection for my phone.
I bought disinfecting wipes for my phone.
'Disinfection' is a process, not a product; use 'disinfectant' or 'disinfecting' for products.
We need to do disinfection to the kitchen.
We need to disinfect the kitchen.
The verb 'disinfect' is more natural in everyday speech; the noun 'disinfection' sounds overly formal for routine actions.

Word family

  • disinfect
    verbB2
  • disinfectant
    nounB2
  • disinfectant
    adjectiveB2
  • disinfected
    adjectiveB2

Synonym discussion

Sense: noun/1

All four words relate to making something free of dirt or germs, but they differ in thoroughness and context. 'Cleaning' is the broadest term — it removes visible dirt, dust, and some germs using soap and water, but does not guarantee that harmful microorganisms are killed. 'Sanitisation' reduces the number of germs to a level considered safe by public health standards; it is common in restaurants and childcare centres. 'Disinfection' goes further — it uses chemicals to kill most bacteria and viruses, though not necessarily spores. 'Sterilisation' is the most thorough: it destroys all microorganisms including heat-resistant spores, and is required in surgical instruments and laboratory equipment. For everyday use, 'disinfection' or 'sanitisation' of surfaces is typical, while 'sterilisation' is reserved for medical settings where absolute cleanliness is critical.

disinfection ↗sanitisationsterilisationcleaning

Common collocations

Nouns

  • surface disinfection
  • water disinfection
  • hand disinfection
  • chemical disinfection

Phrases

  • disinfection procedure
  • disinfection protocol
  • disinfection service
  • round of disinfection

Prepositions

Etymology

LatinFrenchEnglish

The word comes from French 'désinfecter' (from 'dis-' meaning 'remove' and 'infecter' meaning 'infect'), which is based on Latin 'inficere' — originally meaning 'to dip in' or 'to dye', later developing the sense of 'to spoil' or 'to corrupt'. The noun 'disinfection' entered English in the early 1800s, around the same time that scientists began to understand the role of microorganisms in causing disease.