15-letter words containing f, a, c, e
- traffic manager — a person who supervises the transportation of goods for an employer.
- traffic offence — a violation of traffic regulations, such as breaking the speed limit
- traffic pattern — Aeronautics. a system of courses about an airfield that aircraft are assigned to fly when taking off, landing, or preparing to land.
- transfer factor — a lymphocyte product that, when extracted from T cells of an individual with immunity to a particular antigen, can confer that immunity when administered to another individual of the same species.
- tray classifier — A tray classifier is a tank for leaching from a dispersed solid, in which pulp at the bottom of the tank is raked (= moved to the exit) while solvent is forced toward the bottom of the tank.
- ultracentrifuge — a high-speed centrifuge for subjecting sols or solutions to forces many times that of gravity and producing concentration differences depending on the weight of the micelle or molecule.
- ultramicrofiche — ultrafiche.
- unaccounted for — If people or things are unaccounted for, you do not know where they are or what has happened to them.
- unaccounted-for — not accounted for; not understood; unexplained: an explosion resulting from some unaccounted-for mechanical failure.
- unfair practice — unfair competition.
- velcro fastener — a fastener made of Velcro
- viral infection — disease caused by a virus
- warrant officer — (in the U.S. Armed Forces) an officer of one of four grades ranking above enlisted personnel and below commissioned officers.
- welfare officer — a person who gives people help and advice
- witch of agnesi — a plane curve symmetrical about the y- axis and asymptotic to the x- axis, given by the equation x 2 y =4 a 2 (2 a − y).
- yeast infection — candida: genital inflammation