1759 in J. Long Select. Unpubl. Rec. Govt. (1973) 254 1 otter box set with diamonds.

1772 E. Griffith Wife in the Right iii. 49 Her breath smells like Otto of roses.

1795 F. Reynolds Speculation i. 8 You might use otto of roses instead of lavender.

1813 G. R. tr. Horace Odes ii. xi, in T. Moore Intercepted Lett. 73 While Otto of Roses Refreshing all noses Shall sweetly exhale from our whiskers and wigs.

1818 T. L. Peacock Nightmare Abbey xi. 155 Dipping his handkerchief in blood or in otto of roses with the same polite empressement, and cutting a throat or an orange with the same grinning nonchalance.

1835 Blackwood's Edinb. Mag. 37 440 Sweet as ottar of roses distilled by the alchymic sun.

1853 C. Brontë Villette I. xiv. 288 I..asked her what..de Hamal might have done with the precious fragments of that heart—..conserved them in otto of roses?

1908 Westm. Gaz. 30 Mar. 10/3 As a scent otto of violets has become increasingly popular each year.

1919 S. Kaye-Smith Tamarisk Town i. ii. 48 There was a drift of faint perfumes: flowers, macassar oil, otto of roses, lavender and peau d'espagne.

1939–40 Army & Navy Stores Catal. 431/1 Cold cream, ‘Otto of Rose’ jar, 1/3.

1991 A. Myers Murder at Masque vii. 143 The smell of her otto of roses mingling with the sea salt rushed to Alfred's head.

1822 J. Neal Logan: Family Hist. II. iv. 196 What was left, would be the purest element..that ever was extracted from mortality. It would be the otto of genius.

1823 J. Neal Errata I. xix. 304 Why, rot me, if thou art not the very otto of impudence.

1850 W. M. Thackeray Pendennis II. x. 100 The Captain, before issuing..scented himself with otto of whisky.

1942 E. Birney Anglosaxon Street in R. Brown & D. Bennett Anthol. Canad. Lit. in Eng. (1982) 400 Cellarrot Ottar of carexhaust catcorpse and cookinggrease.

1987 P. Muldoon Meeting the British 54 Flute-music, panting of hinds, her spindrift gaze; peacocks, sandalwood, the musky otto of her cleft.

1810 Splendid Follies I. 177 An ell of ottoed cambric.

1870 Rep. U.S. Commissioners Paris Universal Expos. 1867 iii. 60 (heading) Otto & Langen's gas-engine.]

1878 Sci. Amer. 30 Mar. 195/1 The new Otto horizontal gas engine..closely resembles the ordinary horizontal steam engine.

1885 W. Macgregor Gas Engines ii. 81 The original and classic type of the Otto engine has received improvements at the hands of both its German and English manufacturers.

1886 D. Clerk Gas Engine vii. 183 The indicator diagrams prove the very efficient nature of the Otto cycle.

1930 Engineering 7 Feb. 186/1 Theoretically, the Otto cycle..promised higher efficiencies than the constant-pressure Diesel cycle.

1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VII. 201/1 For an Otto engine, an increase in either the air temperature or density increases the tendency of the engine to knock.

1997 BBC Top Gear Mag. Nov. 13/4 By adding an electric motor and a ultra-capacitor, Honda has turned the one-in-four power stroke of the Otto cycle into a four-in-four system.

1886 D. Clerk Gas Engine vi. 106 The Otto is only half single acting.

1903 Work 25 18/2 Petrol car engines are of the vertical single-acting Otto type, any variations consisting chiefly of horizontal Ottos.

1879 Bazaar, Exchange & Mart 29 Oct. 311/1 We..had an agreeable surprise on beholding the Otto for the first time.

1885 Cyclists' Touring Club Gaz. Sept. 284 My experience is that the ‘Otto’ is more easily ridden uphill than the F.S. tricycle.

1887 Viscount Bury & G. L. Hillier Cycling (Badminton Libr. of Sports & Pastimes) xiii. 369 All Ottos built before 1882 were fitted with block breaks.

1958 C. F. Caunter Handbk. Coll. Cycles (Sci. Mus.) ii. 12 The Otto cycle soon became somewhat popular, as it was considered less dangerous than the ordinary high bicycle, but the subsequent development of the safety bicycle led to its complete abandonment.

1994 Sports Illustr. 22 Aug. 70/3 The most valuable piece is an 1881 Otto dicycle.

1885 Cyclists' Touring Club Gaz. Sept. 284 One or more tricyclists who are in the habit of riding with good Ottoists.

1994 N. Clayton Early Bicycles (Shire Album No. 173) 19/2 Known as the ‘dicycle’ and its adherents as ‘Ottoists’, it survived despite the financial setbacks of its promoter for almost ten years during which time nearly one thousand were sold.