top-leveladj.

Brit.

/ˌtɒpˈlɛvl/, U.S.

/ˈtɑpˌlɛv(ə)l/

Origin: Formed within English, by compounding. Etymons: top adj., level n.

Etymology: < top adj. + level n.

Originally U.S.

Of the highest level of importance, authority, or prestige.

ΘΚΠ

the mind > attention and judgement > importance > [adjective] > most important > taking place at level of highest importance

top-level1944

1944 Wartime Health & Educ.: Hearings before Subcomm. of Comm. Educ. & Labor: Pt. I (U.S. Senate 78th Congr., 1st Sess.) I. 54 We are not a top level coordinating agency.

1969 Daily Tel. 17 Dec. 2/6 Top-level talks to discuss the threatened unofficial strike at 63 power stations..are being held..between employers and unions.

1979 Yale Alumni Mag. Apr. 8/2 The desire to watch top-level squash competition has also increased.

2006 New Yorker 28 Aug. 28/1 Since the beginning of 2005, nearly a hundred top-level executives at public companies have participated in management buyouts.

2021 Cape Times (Nexis) 19 Nov. 16 It is true that in top-level sport, players should not require too much in the way of external motivation to perform at their optimum.

Compounds

top-level domain n. Computing the last component of a domain name, which classifies the corresponding IP address by location, sphere of activity, etc.; abbreviated TLD.In the hierarchical domain name system, the top-level domain represents the second-highest level, after the unnamed domain to which all TLDs belong..com, .edu, .gov, .net, .org, and country-based top-level domain names such as .au, .in, .uk, .us, are some of the commonest in use.

ΚΠ

1982 Z. Su & J. B. Postel Request for Comments (Network Working Group) (Electronic text) No. 819. 6 The registrar of the naming universe specifies the top-level set of domains and designates a registrar for each of these domains.]

1982 Z.-S. Su & J. Postel Domain Naming Convention for Internet User Applications (Network Working Group: RFC 819) 9 in www.rfc-editor (accessed 15 Feb. 2022) Note very carefully that the top-level domain ‘ARPA’ does not map one-to-one with the ARPANET—domains are administrative, not topological.

1996 Internet World Dec. 18/1 With the next two years, Internet users can expect to see 150 new top-level domains (TLDs)—adding to the familiar .com, .edu, .gov, and the like.

2017 Guardian (Nexis) 12 Mar. Five years ago, the body in charge of names on the internet, ICANN, swept away regulations and opened up a new world of additional web address suffixes, or top-level domains, including .art.

This entry has been updated (OED Third Edition, September 2022).

单词	top-level
释义	top-leveladj. Brit. /ˌtɒpˈlɛvl/, U.S. /ˈtɑpˌlɛv(ə)l/ Origin: Formed within English, by compounding. Etymons: top adj., level n. Etymology: < top adj. + level n. Originally U.S. Of the highest level of importance, authority, or prestige. ΘΚΠ the mind > attention and judgement > importance > [adjective] > most important > taking place at level of highest importance top-level1944 1944 Wartime Health & Educ.: Hearings before Subcomm. of Comm. Educ. & Labor: Pt. I (U.S. Senate 78th Congr., 1st Sess.) I. 54 We are not a top level coordinating agency. 1969 Daily Tel. 17 Dec. 2/6 Top-level talks to discuss the threatened unofficial strike at 63 power stations..are being held..between employers and unions. 1979 Yale Alumni Mag. Apr. 8/2 The desire to watch top-level squash competition has also increased. 2006 New Yorker 28 Aug. 28/1 Since the beginning of 2005, nearly a hundred top-level executives at public companies have participated in management buyouts. 2021 Cape Times (Nexis) 19 Nov. 16 It is true that in top-level sport, players should not require too much in the way of external motivation to perform at their optimum. Compounds top-level domain n. Computing the last component of a domain name, which classifies the corresponding IP address by location, sphere of activity, etc.; abbreviated TLD.In the hierarchical domain name system, the top-level domain represents the second-highest level, after the unnamed domain to which all TLDs belong..com, .edu, .gov, .net, .org, and country-based top-level domain names such as .au, .in, .uk, .us, are some of the commonest in use. ΚΠ 1982 Z. Su & J. B. Postel Request for Comments (Network Working Group) (Electronic text) No. 819. 6 The registrar of the naming universe specifies the top-level set of domains and designates a registrar for each of these domains.] 1982 Z.-S. Su & J. Postel Domain Naming Convention for Internet User Applications (Network Working Group: RFC 819) 9 in www.rfc-editor (accessed 15 Feb. 2022) Note very carefully that the top-level domain ‘ARPA’ does not map one-to-one with the ARPANET—domains are administrative, not topological. 1996 Internet World Dec. 18/1 With the next two years, Internet users can expect to see 150 new top-level domains (TLDs)—adding to the familiar .com, .edu, .gov, and the like. 2017 Guardian (Nexis) 12 Mar. Five years ago, the body in charge of names on the internet, ICANN, swept away regulations and opened up a new world of additional web address suffixes, or top-level domains, including .art. This entry has been updated (OED Third Edition, September 2022). < adj.1944
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