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cassette
(kəˈsɛt, ‖ ka-)
[Fr., dim. of casse or caisse (cf. case), ad. It. cassetta.]
1. a. A casket.
1793Southey Life & Corr. (1849) I. 196 In very bad weather, take out my casette and write to you. 1807― Espriella's Lett. (1814) I. 83 One purchase I ventured to make, that of a travelling caissette. 1881Contemp. Rev. June 926 The robbery of Baroness Von Meyerdorff's Cassette.
b. Photogr. (See quot. 1875). Also, a light-proof (cylindrical) container for a spool of film; a container for an X-ray plate or film.
1875tr. Vogel's Chem. Light v. 42 For the purpose of transporting the plate..the photographer employs a little flat box called the cassette. 1934St. John & Isenburger Industr. Radiogr. xi. 81 To secure the proper contact it is customary in medical practice to mount two intensifying screens permanently in a metal ‘cassette’. This consists of a cast-aluminium frame to which is attached a sheet of Bakelite or aluminium, forming a window or front transparent to x-rays. 1934Webster, Cassette, a film or plate holder, esp. one for the intensifying screen in X-ray photography. 1940Sowerby Dict. Photogr. (ed. 15) 111 Cassette, container in which 35-mm. film, which has no backing paper, is put up for daylight loading into the camera... The name ‘cassette’ is also applied to special containers designed for X-ray duplitised film technique... They ensure even pressure over the whole area of the film when intensifying screens are used. 1962A. Günther Microphotogr. 18 A copying cassette taking 10 metres (30 ft.) or 30 metres (100 ft.) of 35 mm. film. 1964‘E. Peters’ Flight of Witch iii. 44 Miles Mallindine and Dominic Felse were devotedly disentangling finished cassettes from cameras, and securing them in their little yellow bags ready for the post. 1970Amat. Photogr. 11 Mar. 61/3 This is another ‘first’ for 9·5 mm, the gauge which first introduced the amateur to the joys of cassette-loading cameras and projectors.
c. Ceramics. = saggar n. 1.
1909in Webster.
d. A closed container of magnetic tape with both supply and take-up spools, so designed that it needs merely to be inserted into a suitable tape recorder, computer, or video recorder to be ready for use. Cf. videocassette s.v. video-.
1960Tape Recording & Hi-Fi Yearbk. 1959–60 5 One of the new decks..is the first British product designed to operate with cassettes (or magazines), with the tape enclosed so that there is no need to thread it in front of the magnetic heads on the deck, nor to anchor it in the spools. 1967J. Gardner Madrigal viii. 199 Mostyn had his briefcase open and a cassette tape-recorder ready to run. 1969Tape Recording Yearbk. (ed. 9) 6 Insertion of a cassette automatically brings the tape transport system into operation. 1970O. Dopping Computers & Data Processing iii. 64 The inscribers provided by IBM..record on special tape in cassettes. The cassettes are read into the computer by means of a special tape reader. 1983D. H. Sandars Computers Today vi. 159 Magnetic tape cassettes are used in microcomputers and data entry stations. 1984Which Micro? Dec. 1 (Advt.), Cassettes are just one form of program storage and playback.
2. Special Comb.: cassette player = tape player s.v. tape n.1 4; cassette recorder, a tape recorder designed to accept cassettes.
[1967Punch 23 Aug. 261/1 You know there's no telly in those rooms? Just radio and a cassette tape-player.] 1968Audio May 25/3 Four-track and 8-track cartridge units do not offer recording facilities in a compact package yet, so they take a back seat to *cassette players in this respect. 1984A. Desai In Custody vi. 100 Perhaps your department will buy a cassette player one day.
1968Mod. Photogr. Mar. 52/3,I have unhesitatingly recommended the Philips *cassette recorders to many friends. 1975Language for Life (Dept. Educ. & Sci.) xxii. 316 Many schools will have purchased their spool recorders before cassette recorders were fully developed. 1984Choosing & using Your Home Computer 11/1 You will also require a means of saving programs for future use. A cassette recorder or disk system are typical methods.
Add:[1.] e. Genetics. A block of genetic material which can be readily inserted into a chromosome or moved between locations on a genome as a single unit, esp. one which is only expressed at a particular location.
1977J. B. Hicks et al. in A. I. Bukhari et al. DNA Insertion Elements, Plasmids, & Episomes 457 Studies of mating-type interconversion in the yeast Saccharomyces cerevisiae have led us to propose a new mechanism of gene control involving mobile genes. In this hypothesis, the ‘cassette model’ of mating-type interconversion, cell type is determined by which of two blocs (‘cassettes’) of regulatory information is inserted into the mating-type locus. Ibid., The cassettes themselves may be analogous to temperate prophages or transposable drug resistance elements, in which structural genes are flanked by sites governing their mobility. 1983Current Topics Developmental Biol. XVIII. 5 We termed these genetic blocks ‘cassettes’ because they are expressed only when located at the mating type locus, which acts like the playback head of a tape recorder, and not expressed when the cassettes are located at storage loci HML and HMR. 1983J. R. S. Fincham Genetics xvii. 486 The transposition or ‘cassette’ hypothesis was soon supported by impressive genetic evidence. 1987Nucleic Acids Res. XV. 8115 Chimeric genes constructed with these cassettes can be used to transform plants. 1988New Scientist 21 Apr. 40/2 The production of haemolysin is determined by a small cassette of genes (called hly).
[2.] cassette deck (see deck n.1 3 f), a cassette player and recorder, usu. one designed to be connected to an external amplifier.
1972Gramophone May 1953 (Advt.), This unit offers three sound sources—a stereo record turntable system, a VHF stereo/medium wave tuner and a stereo *cassette deck with simple front loading. 1984Which Micro? Dec. 17/2, The Amstrad CPC464..comes with a colour monitor and cassette deck. 1990N. Williams Wimbledon Poisoner xxxvii. 254 She..went towards the cassette deck by the bed. |