activatorn.

Brit.

/ˈaktᵻveɪtə/, U.S.

/ˈæktəˌveɪdər/

Origin: Formed within English, by derivation. Etymons: activate v., -or suffix.

Etymology: < activate v. + -or suffix.

1. A thing which or person who activates something; esp. a substance which stimulates or initiates a natural process.

ΘΚΠ

the world > action or operation > undertaking > beginning action or activity > [noun] > bringing into action > that which or one who > that which

informant1661

actuator1856

activator1904

the world > action or operation > undertaking > beginning action or activity > [noun] > bringing into action > that which or one who > one who

activator1958

1904 Proc. Royal Soc. 1904–5 74 311 A milligram of ferrous sulphate was added as an activator.

1930 Lancet 27 Dec. 1418/1 By itself this activator can do nothing, but its addition to the muscle extract induces hexoses to split even more rapidly than glycogen.

1958 Spectator 4 July 9/3 They chose Maurice Buckmaster, who later became famous as an activator of the French Resistance.

1963 B. Fozard Instrumentation Nucl. Reactors vi. 63 In scintillation phosphors these impurities are known as activators.

1990 Amer. Horticulturist Sept. 5/1 Get a bag, add organic material, thrown in the activator and, poof! quickie compost.

2005 C. Mendelson Laundry i. iv. 71 Activated oxygen bleaches..contain a chemical catalyst called an activator that significantly improves their functioning at lower wash temperatures.

2. With modifying word specifying the thing or process activated.

ΚΠ

1931 Port Arthur (Texas) News 15 July 3/1 The soil activator will be spread Saturday.

1957 Life 7 Oct. 4 (advt.) Nu-Curl 70 impregnates straight or permanented hair with a natural curl-activator.

1963 N.Y. Times 15 Sept. (Gardens section) 30/4 Plant material, compost activator, lime and soil from spent pots will be used.

1997 R. M. Love in G.M. Hall Fish Processing Technol. (ed. 2) i. 23 Red-coloured trout eggs hatch better than pale ones, and canthaxanthin and astaxanthin appear to be sperm activators.

2007 Sunday Times (Nexis) 20 May (Style section) 46 It is a moisturiser, tan activator and self-tan, and its SPF8 means it also protects.

This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021).

单词	activator
释义	activatorn. Brit. /ˈaktᵻveɪtə/, U.S. /ˈæktəˌveɪdər/ Origin: Formed within English, by derivation. Etymons: activate v., -or suffix. Etymology: < activate v. + -or suffix. 1. A thing which or person who activates something; esp. a substance which stimulates or initiates a natural process. ΘΚΠ the world > action or operation > undertaking > beginning action or activity > [noun] > bringing into action > that which or one who > that which informant1661 actuator1856 activator1904 the world > action or operation > undertaking > beginning action or activity > [noun] > bringing into action > that which or one who > one who activator1958 1904 Proc. Royal Soc. 1904–5 74 311 A milligram of ferrous sulphate was added as an activator. 1930 Lancet 27 Dec. 1418/1 By itself this activator can do nothing, but its addition to the muscle extract induces hexoses to split even more rapidly than glycogen. 1958 Spectator 4 July 9/3 They chose Maurice Buckmaster, who later became famous as an activator of the French Resistance. 1963 B. Fozard Instrumentation Nucl. Reactors vi. 63 In scintillation phosphors these impurities are known as activators. 1990 Amer. Horticulturist Sept. 5/1 Get a bag, add organic material, thrown in the activator and, poof! quickie compost. 2005 C. Mendelson Laundry i. iv. 71 Activated oxygen bleaches..contain a chemical catalyst called an activator that significantly improves their functioning at lower wash temperatures. 2. With modifying word specifying the thing or process activated. ΚΠ 1931 Port Arthur (Texas) News 15 July 3/1 The soil activator will be spread Saturday. 1957 Life 7 Oct. 4 (advt.) Nu-Curl 70 impregnates straight or permanented hair with a natural curl-activator. 1963 N.Y. Times 15 Sept. (Gardens section) 30/4 Plant material, compost activator, lime and soil from spent pots will be used. 1997 R. M. Love in G.M. Hall Fish Processing Technol. (ed. 2) i. 23 Red-coloured trout eggs hatch better than pale ones, and canthaxanthin and astaxanthin appear to be sperm activators. 2007 Sunday Times (Nexis) 20 May (Style section) 46 It is a moisturiser, tan activator and self-tan, and its SPF8 means it also protects. This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021). < n.1904
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