19-letter words containing a, n, c, i, d, t
- landscape architect — A landscape architect is the same as a landscape gardener.
- leading aircraftman — the rank above aircraftman
- leading coefficient — the coefficient of the term of highest degree in a given polynomial. 5 is the leading coefficient in 5 x 3 + 3 x 2 − 2 x + 1.
- line of demarcation — a separation between things deemed to be distinct
- magnetic tape drive — (storage) (Or "tape drive") A peripheral device that reads and writes magnetic tape.
- magnetohydrodynamic — Of or pertaining to magnetohydrodynamics.
- managed competition — a strategy for healthcare delivery whereby costs are reduced by fostering competition between providers of managed-care contracts for large employers.
- manchester encoding — (communications, protocol) A method of transmitting bits which enables the receiver to easily synchronise with the sender. A simple way of signalling bits might be to transmit a high voltage for some period for a 1-bit and a low voltage for a 0 bit: Bits Sent: 1 1 0 0 Signal: High ___ Low |___ Time: -> . . . . . However, when several identical bits are sent in succession, this provides no information to the receiver about when each bit starts and stops. Manchester encoding splits each bit period into two, and ensures that there is always a transition between the signal levels in the middle of each bit. This allows the receiver to synchronise with the sender. In normal Manchester encoding, a 1-bit is transmitted with a high voltage in the first period, and a low voltage in the second, and vice verse for the 0 bit: Bits Sent: 1 1 0 0 Signal: High Low || |_| || Time: -> . ' . ' . ' . ' . In Differential Manchester encoding, a 1-bit is indicated by making the first half of the signal equal to the last half of the previous bit's signal and a 0-bit is indicated by making the first half of the signal opposite to the last half of the previous bit's signal. That is, a zero bit is indicated by a transition at the beginning of the bit. Like normal Manchester encoding, there is always a transition in the middle of the transmission of the bit. Differential Manchester Encoding Bits Sent: 1 1 0 0 Signal: High __ Low |_| || || Time: -> . ' . ' . ' . ' . With each bit period half as long, twice as much bandwidth is required when using either of the Manchester encoding schemes.
- manned space flight — space travel in vehicles with a human crew
- means of production — resources: equipment, workers
- medical examination — physical examination
- megabits per second — (unit) (Mbps, Mb/s) Millions of bits per second. A unit of data rate. 1 Mb/s = 1,000,000 bits per second (not 1,048,576). E.g. Ethernet can carry 10 Mbps.
- monoclonal antibody — antibody produced by a laboratory-grown cell clone, either of a hybridoma or a virus-transformed lymphocyte, that is more abundant and uniform than natural antibody and is able to bind specifically to a single site on almost any chosen antigen or reveal previously unknown antigen sites: used as an analytic tool in scientific research and medical diagnosis and potentially important in the treatment of certain diseases. Abbreviation: MAb.
- moses-in-the-cradle — a plant, Rhoeo spathacea, native to the West Indies and Central America, having leaves with purple undersides and white flowers enclosed in a boat-shaped envelope formed by two bracts.
- national coal board — a statutory corporation set up to run Britain's nationalised coal mining industry between 1947 and 1994, at which time the industry was privatized
- necessary condition — prerequisite
- neighbourhood watch — a scheme under which members of a community agree together to take responsibility for keeping an eye on each other's property, as a way of preventing crime
- no strings attached — without conditions
- non-confidentiality — spoken, written, acted on, etc., in strict privacy or secrecy; secret: a confidential remark.
- northwest ordinance — the act of Congress in 1787 providing for the government of the Northwest Territory and setting forth the steps by which its subdivisions might become states.
- nuclear disarmament — the gradual reduction and eventual elimination of all nuclear weapons in the world
- occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
- old spanish customs — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
- on no consideration — for no reason whatsoever; never
- operations director — a director or senior manager who oversees the efficiency of business operations
- orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
- overhead projection — the projection (using an overhead projector) of an enlarged image of a transparency onto a surface above and behind the person using it
- oxidation-reduction — a chemical reaction between two substances in which one substance is oxidized and the other reduced.
- pecuniary advantage — financial advantage that is dishonestly obtained by deception and that constitutes a criminal offence
- pedestrian crossing — place to cross road
- pedestrian precinct — A pedestrian precinct is a street or part of a town where vehicles are not allowed.
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- piece de resistance — the principal dish of a meal.
- plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
- pocket-handkerchief — handkerchief (def 1).
- polyclonal antibody — a mixture of antibodies of different specificities, as in the serum of a person immunized to various antigens.
- post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
- postage and packing — the cost of packing and mailing an item bought by post
- preproduction trial — a trial to test a prototype of a product before the product goes into full-scale production
- production platform — offshore power station
- pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- pseudo-intellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- radiational cooling — the cooling of the earth's surface and adjacent air, primarily at night, caused by a loss of heat due to surface emission of infrared radiation.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- religious education — religion as school subject
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- resonance radiation — radiation emitted by an atom or molecule, having the same frequency as that of an incident particle, as a photon, and usually involving a transition to the lowest energy level of the atom or molecule.
- reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.