15-letter words containing d, y, o
- video frequency — transmission frequency of the television picture.
- viscosity index — an arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature.
- walking holiday — a holiday on which you walk a lot, esp in the countryside
- wild and woolly — unrestrained; lawless: a wild-and-woolly frontier town.
- wild-and-woolly — unrestrained; lawless: a wild-and-woolly frontier town.
- winter holidays — a period of rest from work or studies taken in winter
- wood woollyfoot — a common yellowish basidiomycetous fungus, Collybia peronata, of broad-leaved woodland, having a hairy tuft at the foot of the stem
- working holiday — trip combining vacation with job experience
- x window system — (operating system, graphics) A specification for device-independent windowing operations on bitmap display devices, developed initially by MIT's Project Athena and now a de facto standard supported by the X Consortium. X was named after an earlier window system called "W". It is a window system called "X", not a system called "X Windows". X uses a client-server protocol, the X protocol. The server is the computer or X terminal with the screen, keyboard, mouse and server program and the clients are application programs. Clients may run on the same computer as the server or on a different computer, communicating over Ethernet via TCP/IP protocols. This is confusing because X clients often run on what people usually think of as their server (e.g. a file server) but in X, it is the screen and keyboard etc. which is being "served out" to the applications. X is used on many Unix systems. It has also been described as over-sized, over-featured, over-engineered and incredibly over-complicated. X11R6 (version 11, release 6) was released in May 1994. See also Andrew project, PEX, VNC, XFree86.
- x-ray diagnosis — diagnosis by means of an X-ray
- xeroradiography — an x-ray utilizing a specially coated plate that allows a picture to be developed without the use of liquid chemicals.
- yellow lead ore — wulfenite.
- yellow mandarin — (in the Chinese Empire) a member of any of the nine ranks of public officials, each distinguished by a particular kind of button worn on the cap.
- yorkshire dales — the valleys of the rivers flowing from the Pennines in W Yorkshire: chiefly Ribblesdale, Swaledale, Nidderdale, Wharfedale, and Wensleydale; tourist area
- young pretender — a member of the royal family that ruled in Scotland from 1371 to 1714 and in England from 1603 to 1714.
- young's modulus — a coefficient of elasticity of a substance, expressing the ratio between a stress that acts to change the length of a body and the fractional change in length caused by this force.
- ytterbium oxide — a colorless compound, Yb 2 O 3 , used in certain alloys and ceramics.