synchronousadj.

1669 T. Gale Court of Gentiles: Pt. I ii. v. 56 Hercules, the Tyrian Commander; whom some make synchronous with Moses.

1772 T. Nugent tr. J. F. de Isla Hist. Friar Gerund I. 217 It is affirmed by a coetaneous, syncronous, and faith-worthy author.

1833 C. Lyell Princ. Geol. III. 42 Formations, which, although dissimilar both in organic and mineral characters, were of synchronous origin.

1872 H. A. Nicholson Man. Palæontol. 19 Synchronous deposits necessarily contain wholly different fossils, if one has been deposited by fresh water, and the other has been laid down in the sea.

1878 H. W. Bates Central Amer. vi. 78 The rainy season on the coasts is not synchronous with that of the uplands.

1823 T. Ross tr. F. Bouterwek Hist. Spanish & Portuguese Lit. I. 499 A synchronous account of all the remarkable productions of the polite literature of Spain.

1843 Civil Engineer & Architect's Jrnl. 6 159/2 Where is the line to be drawn by which different styles ought to have been set apart as worthy to afford a new starting point for synchronous treatment?

1882–3 Schaff's Encycl. Relig. Knowl. 1249 The synchronous history of the divided kingdoms of Israel and Judah.

1867 W. T. Brande & G. W. Cox Dict. Sci., Lit. & Art (new ed.) III. 685/1.

1677 Ld. Guildford Philos. Ess. Musick 20 The synchronous motion of the pulses at the mouth of the Pipe with the vibrations of the included Air promote the Sound of the Pipe.

1733 J. Arbuthnot Ess. Effects Air Human Bodies ii. 29 The Variations of the Gravity of the Air keep both the Solids and Fluids in an oscillatory Motion, synchronous and proportional to their Changes.

1786 J. Pearson in Med. Communications 2 98 Pulsation.., synchronous with that of the radial artery.

1866 Duke of Argyll Reign of Law iii. 173 The beats of a bird's two wings are always exactly synchronous.

1871 J. Tyndall Fragm. Sci. (1879) I. xiv. 391 Affected by those undulations which are synchronous with their own periods of vibration.

1899 T. C. Allbutt et al. Syst. Med. VIII. 42 The spasms of the face and those of the palate were not synchronous.

1931 B. Brown Talking Pictures 129 As in the regular R.C.A. synchronous system, volume controls are separate from the fader.

1972 Sci. Amer. Apr. 45/1 In all cases where this effect is significant these same tides will have ‘despun’ the satellite to synchronous rotation, that is, the satellite's period of rotation around its own axis equals its period of revolution around the planet and it always presents one face to the planet.

1947 A. W. Burks et al. in J. Von Neumann Coll. Wks. (1963) V. 68 Since the timing of the entire computer is governed by a single pulse source, the computer circuits will be said to operate as a synchronized system.]

1954 IRE Trans. Electronic Computers 3 14/2 Because the system being designed was centrally synchronous, over-all timing considerations now came to the fore.

1962 Y. Chu Digital Computer Design Fund. v. 161 The binary state of the signals in logic circuits can be represented by either of two voltage levels or by pulses... A synchronous computer also requires clock pulses.

1971 I. H. Gould IFIP Guide Concepts & Terms Data Processing 76 Synchronous working and asynchronous working often coexist in different parts of a computer system. For example, in many computers the central processor is synchronous, but the operation of peripheral equipment is only initiated by signals from the central processor and thereafter proceeds asynchronously.

1982 Heap & Martin Introd. Digital Electronics iii. 73 In the worst case the problem of interfacing two independent synchronous systems which are operating at different clock rates may occur.

1961 N.Y. Times 30 July iv. 9/8 Synchronous satellites will require bigger boosters to reach their higher altitudes.

1964 Daily Tel. 4 Mar. 14/6 Three satellites in this synchronous orbit would give a complete global system of communications except for small regions round the North and South Pole.

1967 Technol. Week 20 Feb. 4/2 There is substantial agreement that a synchronous satellite is desirable for air traffic control.

1970 Nature 9 May 503/1 Only one orbit exists which is at the same time equatorial, circular and synchronous.

1978 Daily Tel. 11 July 2/5 ‘Charon’, which brings to 33 the number of known moons in the solar system, appears to have a synchronous orbit around Pluto of 12,000 miles, which means that it always stays over a fixed spot over Pluto.