quaternary
1 of 2adjective
qua·ter·na·ry ˈkwä-tər-ˌner-ē 
ˈkwä-tə-,
kwə-ˈtər-nə-rē 1
a
: of, relating to, or consisting of four units or members
b
: of, relating to, or being a number system with a base of four
2
capitalized : of, relating to, or being the geologic period from the end of the Tertiary to the present time or the corresponding system of rocks see Geologic Time Table
3
: consisting of, containing, or being an atom bonded to four other atoms
quaternary
2 of 2noun
plural quaternaries
1
capitalized : the Quaternary period or system of rocks
2
: a member of a group fourth in order or rank
Example Sentences
Recent Examples on the Web
Kristen Jordan Shamus, Detroit Free Press, 6 Jan. 2022 Most regions across the U.S. have several small hospitals dealing with the bulk of the common issues that require hospitalization along with one or two tertiary or quaternary care institutions able to handle patients with more specialized needs. Suparna Dutta, STAT, 20 Sep. 2021 Two disinfectants known to be sprayed at Glades are called Mint and Maxim Neutral, and their ingredients that have raised concern are known as quaternary ammonium compounds, or QACs. Matthew Phelan, Scientific American, 17 Sep. 2021 With the additions, the north-side facility will seek to become a regional quaternary care center, which will provide specialty complex care to patients from around the state as well as the region, hospital officials said. Alexandria Burris, The Indianapolis Star, 4 June 2021 El Centro Regional is not a tertiary or quaternary care center, meaning it’s not a hospital with extensive specialty service or care. Carolyn Barber, Fortune, 1 Dec. 2020 Snee's chemical blenders then began working to develop a new combination of quaternary ammonium compounds that could be proven to kill SARS-CoV-2 and therefore be allowed by the EPA to label their product as such. Anthony Mcauley | Staff Writer, NOLA.com, 21 Aug. 2020 SurfaceWise2′s active ingredient is quaternary ammonium, which is widely used as a disinfectant in hospitals against bacteria, fungi and certain viruses. Ashton Nichols, Dallas News, 2 June 2020 The National Institutes of Health has designated quaternary ammonium as asthma-causing and irritable to eyes and skin, flammable and corrosive, harmful to aquatic ecosystems, and persistent in the environment. Ashton Nichols, Dallas News, 2 June 2020 Joseph Truini, Popular Mechanics, 6 June 2017 See More
Adjective
Transfers from other hospital systems are limited to those requiring quaternary care and must be coordinated through the system’s Mission Control. Kristen Jordan Shamus, Detroit Free Press, 6 Jan. 2022 Most regions across the U.S. have several small hospitals dealing with the bulk of the common issues that require hospitalization along with one or two tertiary or quaternary care institutions able to handle patients with more specialized needs. Suparna Dutta, STAT, 20 Sep. 2021 Two disinfectants known to be sprayed at Glades are called Mint and Maxim Neutral, and their ingredients that have raised concern are known as quaternary ammonium compounds, or QACs. Matthew Phelan, Scientific American, 17 Sep. 2021 With the additions, the north-side facility will seek to become a regional quaternary care center, which will provide specialty complex care to patients from around the state as well as the region, hospital officials said. Alexandria Burris, The Indianapolis Star, 4 June 2021 El Centro Regional is not a tertiary or quaternary care center, meaning it’s not a hospital with extensive specialty service or care. Carolyn Barber, Fortune, 1 Dec. 2020 Snee's chemical blenders then began working to develop a new combination of quaternary ammonium compounds that could be proven to kill SARS-CoV-2 and therefore be allowed by the EPA to label their product as such. Anthony Mcauley | Staff Writer, NOLA.com, 21 Aug. 2020 SurfaceWise2′s active ingredient is quaternary ammonium, which is widely used as a disinfectant in hospitals against bacteria, fungi and certain viruses. Ashton Nichols, Dallas News, 2 June 2020 The National Institutes of Health has designated quaternary ammonium as asthma-causing and irritable to eyes and skin, flammable and corrosive, harmful to aquatic ecosystems, and persistent in the environment. Ashton Nichols, Dallas News, 2 June 2020 Noun
Today's PT lumber is treated with safer, less toxic chemicals, such as alkaline copper quaternary (ACQ) or copper azole. Joseph Truini, Popular Mechanics, 6 June 2017 See More Word History
Etymology
Adjective
Latin quaternarius, from quaterni four each
First Known Use
Adjective
1605, in the meaning defined at sense 1a
Noun
1880, in the meaning defined at sense 1
Phrases Containing quaternary
Medical Definition
quaternary 1 of 2
adjective
qua·ter·na·ry ˈkwät-ə(r)-ˌner-ē kwə-ˈtər-nə-rē
kwə-ˈtər-nə-rē : consisting of, containing, or being an atom bonded to four other atoms
quaternary
2 of 2noun
plural quaternaries
: quaternary ammonium compound