high-densityadj.

Brit.

/ˌhʌɪˈdɛnsᵻti/, U.S.

/ˌhaɪˈdɛnsədi/

Origin: Formed within English, by compounding. Etymons: high adj., density n.

Etymology: < high adj. + density n. Compare slightly earlier low-density adj.

Having a high density; spec. (a) (of a substance) having a high relative density (specific gravity); (b) (of a residential area) characterized by a high density of population or buildings. Cf. low-density adj.

ΚΠ

1883 U.S. Patent 281,045 2/1 The temperature at which the different products of petroleum evaporate and boil does not depend merely on the density of the hydrocarbon giving off the vapors, the high-density petroleum residuum or petroleum-tar retaining..oils of a much lower boiling-point.

1906 Philos. Trans. (Royal Soc.) A. 205 207 A process of fractional combustion was therefore applied to some of the samples obtained from high density charges.

1952 Ann. Reg. 1951 401 High-density..central city areas.

1960 Times 28 Sept. 21/7 New plastics such as high-density polyethylene.

1964 Oceanogr. & Marine Biol. 2 33 The possibility of high-density turbidity currents in the ocean.

1999 Newsweek 15 Feb. 76/2 To preserve land for high-density housing, ‘big box’ retailers are discouraged.

2008 Independent 8 Oct. (Green Property section) 2/2 The property features high-density insulation, solar water heating and recycled building materials.

Compounds

high-density lipoprotein n. Biochemistry any of a class of plasma lipoproteins which have a relatively high density and which are involved in the transport of cholesterol from the tissues and blood to the liver; such lipoproteins collectively; abbreviated HDL; cf. low-density lipoprotein n. at low-density adj. Compounds.

ΚΠ

1952 Jrnl. Pediatrics 40 12/2 Broadly, the lipoproteins may be segregated into major groups, the so-called ‘low density lipoproteins’ (density less than 1.063) and the ‘high-density lipoproteins’ (density greater than 1.063).

1979 Compl. Bk. Roller Skating vi. 87 The lipoproteins..carry the cholesterol back to the liver, keeping it away from your blood vessel linings. These are the high-density lipoproteins.

2006 Chesapeake Life Dec. 87/1 In 1960, Dr. Donald Fredrickson..discovered ‘Tangier disease’, a rare, inherited disorder (it's been identified in only fifty people worldwide) characterized by a severe reduction in the amount of high-density lipoprotein (HDL), or good cholesterol.

This entry has been updated (OED Third Edition, September 2014; most recently modified version published online March 2022).

单词	high-density
释义	high-densityadj. Brit. /ˌhʌɪˈdɛnsᵻti/, U.S. /ˌhaɪˈdɛnsədi/ Origin: Formed within English, by compounding. Etymons: high adj., density n. Etymology: < high adj. + density n. Compare slightly earlier low-density adj. Having a high density; spec. (a) (of a substance) having a high relative density (specific gravity); (b) (of a residential area) characterized by a high density of population or buildings. Cf. low-density adj. ΚΠ 1883 U.S. Patent 281,045 2/1 The temperature at which the different products of petroleum evaporate and boil does not depend merely on the density of the hydrocarbon giving off the vapors, the high-density petroleum residuum or petroleum-tar retaining..oils of a much lower boiling-point. 1906 Philos. Trans. (Royal Soc.) A. 205 207 A process of fractional combustion was therefore applied to some of the samples obtained from high density charges. 1952 Ann. Reg. 1951 401 High-density..central city areas. 1960 Times 28 Sept. 21/7 New plastics such as high-density polyethylene. 1964 Oceanogr. & Marine Biol. 2 33 The possibility of high-density turbidity currents in the ocean. 1999 Newsweek 15 Feb. 76/2 To preserve land for high-density housing, ‘big box’ retailers are discouraged. 2008 Independent 8 Oct. (Green Property section) 2/2 The property features high-density insulation, solar water heating and recycled building materials. Compounds high-density lipoprotein n. Biochemistry any of a class of plasma lipoproteins which have a relatively high density and which are involved in the transport of cholesterol from the tissues and blood to the liver; such lipoproteins collectively; abbreviated HDL; cf. low-density lipoprotein n. at low-density adj. Compounds. ΚΠ 1952 Jrnl. Pediatrics 40 12/2 Broadly, the lipoproteins may be segregated into major groups, the so-called ‘low density lipoproteins’ (density less than 1.063) and the ‘high-density lipoproteins’ (density greater than 1.063). 1979 Compl. Bk. Roller Skating vi. 87 The lipoproteins..carry the cholesterol back to the liver, keeping it away from your blood vessel linings. These are the high-density lipoproteins. 2006 Chesapeake Life Dec. 87/1 In 1960, Dr. Donald Fredrickson..discovered ‘Tangier disease’, a rare, inherited disorder (it's been identified in only fifty people worldwide) characterized by a severe reduction in the amount of high-density lipoprotein (HDL), or good cholesterol. This entry has been updated (OED Third Edition, September 2014; most recently modified version published online March 2022). < adj.1883
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