octodecimon.

Brit.

/ˌɒktəʊˈdɛsᵻməʊ/, U.S.

/ˌɑktoʊˈdɛsəˌmoʊ/

Forms: 1700s– octodecimo. Also represented by the abbreviation 18mo.

Origin: A borrowing from Latin. Etymons: Latin octodecimo, octodecimus.

Etymology: < post-classical Latin octodecimo, ablative of octodecimus eighteenth (9th cent.) < classical Latin octō- octo- comb. form + decimus tenth (see decimal adj. and n.). Compare quarto n., octavo n., duodecimo n., etc. Compare also slightly later octodecimal adj. at octo- comb. form 2.In the abbreviated form 18mo with the numeral 18 ultimately representing classical Latin octodecim ; compare eighteenmo n.

The size of page produced by folding a standard printing sheet to form a section of eighteen leaves. Also: a book, page, or piece of paper of this size. Cf. eighteen adj. and n. 2b.

ΘΚΠ

society > communication > book > kind of book > size of book > [noun] > octodecimo

eighteen1683

octodecimo1795

1795 Hull Advertiser 19 Dec. 4/3 A purposely manufactured wove paper, in Octodecimo or Eighteens.

1858 O. W. Holmes Autocrat of Breakfast-table i. 24 A little dark platoon of octo-decimos.

1879 Harper's Mag. May 897/1 His little octodecimo on the Mechanism of Morals is a masterpiece of its kind.

1938 William & Mary Coll. Q. Hist. Mag. 18 192 This book contains 70 pages, octo-decimo.

1995 Guardian 27 Sept. i. 2/2 It was only 18mo (octodecimo) in size, bound in cloth, price sixpence.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	octodecimo
释义	octodecimon. Brit. /ˌɒktəʊˈdɛsᵻməʊ/, U.S. /ˌɑktoʊˈdɛsəˌmoʊ/ Forms: 1700s– octodecimo. Also represented by the abbreviation 18mo. Origin: A borrowing from Latin. Etymons: Latin octodecimo, octodecimus. Etymology: < post-classical Latin octodecimo, ablative of octodecimus eighteenth (9th cent.) < classical Latin octō- octo- comb. form + decimus tenth (see decimal adj. and n.). Compare quarto n., octavo n., duodecimo n., etc. Compare also slightly later octodecimal adj. at octo- comb. form 2.In the abbreviated form 18mo with the numeral 18 ultimately representing classical Latin octodecim ; compare eighteenmo n. The size of page produced by folding a standard printing sheet to form a section of eighteen leaves. Also: a book, page, or piece of paper of this size. Cf. eighteen adj. and n. 2b. ΘΚΠ society > communication > book > kind of book > size of book > [noun] > octodecimo eighteen1683 octodecimo1795 1795 Hull Advertiser 19 Dec. 4/3 A purposely manufactured wove paper, in Octodecimo or Eighteens. 1858 O. W. Holmes Autocrat of Breakfast-table i. 24 A little dark platoon of octo-decimos. 1879 Harper's Mag. May 897/1 His little octodecimo on the Mechanism of Morals is a masterpiece of its kind. 1938 William & Mary Coll. Q. Hist. Mag. 18 192 This book contains 70 pages, octo-decimo. 1995 Guardian 27 Sept. i. 2/2 It was only 18mo (octodecimo) in size, bound in cloth, price sixpence. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1795
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