19-letter words containing s, e, a, c, o
- traffic regulations — rules designed to expedite the flow of traffic and prevent collisions
- trahison des clercs — a compromising of intellectual integrity, esp. for political reasons
- transesterification — a reaction between an ester of one alcohol and a second alcohol to form an ester of the second alcohol and an alcohol from the original ester, as that of methyl acetate and ethyl alcohol to form ethyl acetate and methyl alcohol; interesterification.
- transparent context — an expression in which any term may be replaced by another with the same reference without changing its truth-value
- tricks of the trade — expert techniques
- tropical depression — an atmospheric low-pressure system originating in the tropics, specifically, a tropical cyclone in which the maximum sustained wind speed is 38 miles per hour (62 kilometers per hour) or less.
- tussock caterpillar — the larva of a tussock moth.
- ultramicrochemistry — the branch of microchemistry dealing with minute quantities of material weighing one microgram or less.
- ultrasonic cleaning — the use of ultrasound to vibrate a piece to be cleaned while the piece is immersed in a cleaning fluid. The process produces a very high degree of cleanliness, and is used for jewellery and ornately shaped items
- under consideration — being deliberated
- upper carboniferous — Pennsylvanian (defs 2, 4).
- vaginal intercourse — intercourse involving insertion of the penis into the vagina
- vicariate apostolic — a district under the jurisdiction of a vicar apostolic.
- volumetric analysis — determination of the concentration, by volume, of a substance in a solution, as by titration.
- wassermann reaction — a diagnostic test for syphilis using the fixation of a complement by the serum of a syphilitic individual.
- waste heat recovery — the use of heat that is produced in a thermodynamic cycle, as in a furnace, combustion engine, etc, in another process, such as heating feedwater or air
- websters-dictionary — Informal. a dictionary of the English language, especially American English, such as Dictionary.com.
- what makes one tick — a slight, sharp, recurring click, tap, or beat, as of a clock.
- wireless local loop — (communications) (WLL, radio in the loop, RITL, fixed-radio access, FRA) Connecting subscribers to the public switched telephone network (PSTN) using radio signals instead of copper wires. The wireless link may be all or part of the connection between the subscriber and the switch. WLL includes cordless access systems, proprietary fixed radio access and fixed cellular systems.
- young conservatives — the youth section of the United Kingdom Conservative Party until 1998
- zero-hours contract — an employment contract which does not oblige the employer to provide regular work for the employee, but requires the employee to be on call in the event that work becomes available