17-letter words containing t, o, k, i, c
- unofficial strike — a strike that is not approved by the strikers' trade union
- white book cd-rom — (hardware, standard) A more open CD-ROM standard than Green Book CD-ROM. All films mastered on CD-ROM after March 1994 use White Book. Like Green Book, it is ISO 9660 compliant, uses mode 2 form 2 addressing and can only be played on a CD-ROM drive which is XA (Extended Architecture) compatible. White book CDs are labelled "Video CD".
- working substance — a substance, usually a fluid, that undergoes changes in pressure, temperature, volume, or form as part of a process for accomplishing work.