1

pretreatment

noun pre·treat·ment \ ˌprē-ˈtrēt-mənt \
variants: or pre-treatment

Definition of pretreatment

plural pretreatments or pre-treatments
: an act or instance of treating someone or something in advance : preliminary or preparatory treatment
  • pretreatment of stains
  • pretreatment of a surface for painting
  • pretreatment is often required to remove oil and grease from the waste water.
  • —John H. Sheridan
  • … will allow public works crews to apply salt brine to pre-treat city streets before snow events. The pre-treatment creates an additional layer that helps to melt snow …
  • —Kevin Thompkins
  • A drug called atropine can reverse the effects if administered promptly, and pretreatment with pyridostigmine can help shield the body …
  • —Adam Rogers
also : a substance used for such treatment
  • Oils give great shine, but I also use them as a pretreatment to prevent damage prior to coloring my natural hair.
  • —Deena Campbell

First Known Use of pretreatment

1899

in the meaning defined above

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2

pretreatment

adjective
variants: or pre-treatment

Definition of pretreatment

1 : existing or occurring before treatment
  • the pretreatment period
  • a pretreatment condition
  • the patient's pretreatment drug regimen
  • When treatment was discontinued, the condition of treated nasal muscles quickly returned to pretreatment levels.
  • —Michael Vaiman et al.
2 : of, relating to, or being a pretreatment
  • a waste pretreatment facility/system
  • The current chemical pretreatment process uses relatively harsh conditions to break down the tough structure of grass and other biomass.
  • Phys.org
  • In my weekly Ask a Clean Person columns, I talk a lot about laundry boosters and stain pretreatment products …
  • —Jolie Kerr

First Known Use of pretreatment

1912

in the meaning defined at sense 1

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Medical Dictionary

1

pretreatment

noun pre·treat·ment \ -mənt \

medical Definition of pretreatment

: preliminary or preparatory treatment
  • unsuccessful…in preventing tumor growth by pretreatment with vitamin A in mice
  • —E. L. Felix et al

2

pretreatment

adjective

medical Definition of pretreatment

: occurring in or typical of the period prior to treatment
  • a patient's pretreatment blood pressure

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