coolantn.
/ˈkuːlənt/, U.S. /ˈkulənt/ A cooling agent; spec. (a) a liquid used to cool and lubricate a cutting tool; (b) a liquid or gas used to remove heat from an engine or a nuclear reactor.
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society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > heating or cooling system
thermo-siphon1904
coolant1915
thermo-siphonic1920
sodium-cooled1934
society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [noun] > parts of > cooling system or device > cooling agent
coolant1915
society > occupation and work > equipment > machine tool > [noun] > cooling agent
cutting compound1910
cutting oil1917
coolant1941
1915 U.S. Patent 1,147,267 1/1 A forced stream of coolant flowing so rapidly as to wash away the chips..and to keep the tool thoroughly cooled.
1929 Times 12 Mar. p. xxv/3 Such heat..is a nuisance rather than a help; and in most cases special measures have to be taken to get rid of it, by flooding the cutting edges of the tools with liquid ‘coolant’, to prevent their temperature from rising to excess.
1930 H. J. French Quenching of Steels vii. 156 A wide variety of coolants are encountered in commercial heat treatment practice but the five..generally employed are (1) water in baths and sprays, (2) dilute sodium hydroxide solutions, (3) sodium chloride brines, (4) oils or oil-water emulsions, and (5) air.
1941 Edgar Allen News May 736 A coolant should be used with these tools, just as with high speed steel tools.
1956 Planning 22 108 The only method so far discovered is to draw off the heat from the reactor by circulating a gas or liquid coolant.
1968 Times 7 Nov. 3/2 Super-conductivity..can at present be brought about only at such low temperatures that liquid helium must be used as a coolant.
1990 Green Mag. Apr. 58 Despite close monitoring, small amounts of coolant..escape from fridges in the manufacturing stages.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).
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n.1915