Etymologically
← History of thesaurus

thesaurus English · revision 1078

11 Oct 2026, 04:58 by bogdan “New entry from dictionary sources” current version

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+ ==Pronunciation==
+ * IPA: /θɪˈsɔːɹəs/^(Wiktionary)
+
+ ==Etymology==
+ It is [[bor|la|thesaurus|t=treasury, treasure]],^(AHD)^(Barnhart 1995)^(Etymonline)^(MW Collegiate)^(RHWU) [[der|grc|θησαυρός|tr=thēsaurós|t=treasure, treasury, storehouse]],^(AHD)^(Barnhart 1995)^(Etymonline)^(MW Collegiate)^(RHWU) which Watkins relates to ''tithénai'' “to put”,^(Etymonline) though Beekes takes it as a Pre-Greek loanword.^(Etymonline)
+
+ ==Earliest recorded meaning==
+ A treasury or storehouse of knowledge, such as a dictionary or encyclopedia, in Latin titles (1565).^(OED 1989)^(Barnhart 1995)
+
+ ==Semantic evolution==
+ In English the word meant a treasury, as of a temple, from 1823,^(Barnhart 1995)^(Etymonline)^(OED 1989) and a dictionary or encyclopedia full of information from 1840;^(Barnhart 1995)^(Etymonline) early compilers had used ''thesaurarie''.^(Barnhart 1995)^(Etymonline) The sense of a collection of words arranged by meaning comes from Roget's ''Thesaurus'' (1852),^(Etymonline)^(OED 1989) and in the U.S. it came to mean a dictionary of synonyms and antonyms.^(OED 1989)^(AHD)^(RHWU) In information science it names a classified list of index terms (1957).^(OED 1989)^(MW Collegiate)
+
+ ==Timeline==
+ * 1565 – a storehouse of knowledge, in Latin titles.^(OED 1989)^(Barnhart 1995)
+ * 1592 – ''thesaurarie''.^(Barnhart 1995)
+ * 1823 – a treasury.^(Barnhart 1995)^(Etymonline)^(OED 1989)
+ * 1840 – a comprehensive reference book.^(Barnhart 1995)^(Etymonline)
+ * 1852 – Roget's ''Thesaurus''.^(Etymonline)^(OED 1989)
+ * 1957 – a list of index terms.^(OED 1989)
+
+ ==Modern meaning==
+ ===Noun===
+ # A book of [[synonym|alt=synonyms]], often with related words and [[antonym|alt=antonyms]].^(AHD)^(MW Collegiate)^(RHWU)^(Wiktionary)
+ # A book of the specialized vocabulary of a field, or a list of subject headings for indexing.^(AHD)^(MW Collegiate)^(RHWU)^(Wiktionary)
+ # A dictionary, encyclopedia or other comprehensive reference book.^(RHWU)^(Wiktionary)
+ # A storehouse or treasury.^(MW Collegiate)^(RHWU)
+
+ ==Word family==
+ * [[thesaural]]
+
+ ==Usage notes==
+ Merriam-Webster gives ''thesauri'' and ''thesauruses'' as plurals.^(MW Collegiate)
+
+ ==References==
+ {{reflist}}