rarefiern.
/ˈrɛːrᵻfʌɪə/, U.S. /ˈrɛrəˌfaɪər/ rare.
Something that rarefies, esp. an apparatus for pumping air out of a vessel.
ΘΚΠ
the world > matter > constitution of matter > lack of density > [noun] > reduction in density > rarefaction > one who
rarefier1596
1596 T. Nashe Haue with you to Saffron-Walden Ep. Ded. sig. A2 (heading) To..the sincere & finigraphicall rarifier of prolixious rough barbarisme [sc. a barber].
1686 J. Goad Astro-meteorologica i. ii. 6 Such infinite variety of Rarefiers and Condensers.
?1735 Pract. Husbandman & Planter II. Index Heat, a great Rarifier of the Juices, or Moisture of the Earth.
1807 C. Hutton Course Math. (ed. 5) II. 240 The air-pump, or rarefier.
1868 Sci. Amer. 12 Aug. 109/1 The construction of the rarefier..with an air tight condenser.
1922 U.S. Patent 1,402,716 2/2 A pipe connecting the cooling chamber air pipe with the rarefier.
1994 Current Anaesthesia & Crit. Care 5 53 Gas rarifier, not found in later models.
2002 T. Ojasoo tr. P.-H. Gouyon et al. Gene Avatars i. 13 The results of his first experiment excluded the action of heat as a rarefier of air.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).
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