18-letter words containing g, a, d, b
- green-backed heron — a small, American heron, Butorides striatus, having glossy green wings.
- grumbling appendix — a condition in which the appendix causes intermittent pain but appendicitis has not developed
- hardy-weinberg law — a principle stating that in an infinitely large, randomly mating population in which selection, migration, and mutation do not occur, the frequencies of alleles and genotypes do not change from generation to generation.
- hermaphrodite brig — a two-masted sailing vessel, square-rigged on the foremast and fore-and-aft-rigged on the mainmast.
- in good/bad repair — If something such as a building is in good repair, it is in good condition. If it is in bad repair, it is in bad condition.
- in-band signalling — (communications) (Or CAS, channel associated signaling) Transmission of control signals in the same channel as data. This is commonly used in the Public Switched Telephone Network where the same pair of wires carry both voice and control signals (e.g. dialling, ringing). Another example is the use on a computer serial line of Control-S and Control-Q characters for flow control as opposed to hardware flow control which would be out-of-band signalling. In digital communications, in-band signalling often uses "bit-robbing" where, for example, one bit in each frame is used for signalling instead of data. This is the reason why a D1 channel in the T-carrier system can only carry 56 Kbps of usable data instead of the 64 Kbps carried by the D0 channel in the E-carrier system.
- labeled bracketing — a representation of the constituent structure of a string, as a word or sentence, comparable to a tree diagram, in which each constituent is shown in brackets and given a subscript grammatical label, with each bracketed item corresponding to a node in a tree diagram.
- medicine bow range — a range of the Rocky Mountains, in Wyoming and Colorado. Highest peak, Medicine Bow Peak, 12,014 feet (3662 meters).
- moving bed reactor — A moving bed reactor is a reactor in which a layer of catalyst in the form of granules is moved between a reaction area and a regeneration area.
- neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
- obedience training — the training of an animal, especially a dog, to obey certain commands.
- palm beach gardens — a city in SE Florida, near North Palm Beach.
- personal bodyguard — a person employed to protect a particular person
- radio range beacon — a radio transmitter that utilizes two or more directional antennas and transmits signals differing with direction, permitting a flier receiving a signal to determine his or her approximate bearing from the transmitter without a radio compass.
- radiocarbon dating — the determination of the age of objects of organic origin by measurement of the radioactivity of their carbon content.
- ragtag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
- reggio di calabria — a seaport in S Italy, on the Strait of Messina: almost totally destroyed by an earthquake 1908.
- richard p. gabriel — Richard Gabriel
- risk based testing — (testing) Testing based on identification of potential risks (or "candidate risks"), which should be analysed by the project stakeholder or which might appear during the project's development.
- stand-by generator — an electrical system which operates automatically in case the usual system malfunctions
- stand-by passenger — someone who buys a (usually cheaper) ticket, if they are still available, on a plane just before it is about to leave rather than booking in advance
- submaxillary gland — submandibular gland.
- supraorbital ridge — browridge.
- to be above ground — to be alive
- to get a bad press — If someone or something gets a bad press, they are criticized, especially in the newspapers, on television, or on radio. If they get a good press, they are praised.
- transporter bridge — a bridge for carrying passengers and vehicles by means of a platform suspended from a trolley.
- universal debugger — (tool, parallel) (udb) KSR's interactive source level debugger for serial and parallel programs written in KSR, Fortran, KSR C and KSR1 assembly language. Udb is a source level debugger for testing and debugging serial and parallel programs; it is compatible with GDB and dbx. The user can direct udb either by typing commands or graphically through an X-based window interface; the latter provides simultaneous display of source code, I/O and instructions. For parallel programs, operations can be carried out per-thread.
- urban homesteading — homesteading (def 2).