radioelectronics
The practical use of electromagnetic radiation, including radiocommunication, radionavigation, telemechanics, radar, sonar, etc.

radioemitter
Any device that emits radio waves.

radioemitters
plural of radioemitter

radiogoniometer
radio direction finder

radiogoniometers
plural of radiogoniometer

radioheliograph
A heliograph that employs radio waves

radioheliographs
plural of radioheliograph

radioimmunoimaging
immunoimaging by means of radiotracers

radiole
The spine of a sea urchin.
A heavily ciliated feather-like tentacle occurring in clusters on the crowns of certain tubeworms, especially those of the order Canalipalpata (fan-head worms), used for feeding and respiration.

radioles
plural of radiole

radioligand
Any molecule that has a radioactive tracer attached, especially one used for radioimmunoassay

radioligands
plural of radioligand

radiolocator
An instrument that carries out radiolocation.

radiolocators
plural of radiolocator

radiometeorograph
A remote meteorograph that transmits its readings by radio

radiometeorographs
plural of radiometeorograph

radiometer
A device that measures radiant energy.

radiometers
plural of radiometer

radiomicrometer
a device used to measure small changes in radiant heat, or in temperature

radiomicrometers
plural of radiomicrometer

radiopager
A pager (telecommunication device) that operates by means of radio signals.

radiopagers
plural of radiopager

radiophone
A photophone.
A radiotelephone.

radiophones
plural of radiophone

radiophonics
radiophonic sounds and music, or the techniques used to produce them

radiorelay
Alternative form of radio relay.

radiorelays
plural of radiorelay

radioscope
An instrument for detecting or studying X-rays.

radioscopes
plural of radioscope

radiospectrograph
An instrument that records the intensity of radio frequency emissions across a range of frequencies over time, producing a visual representation known as a radio spectrogram.

radiospectrographs
plural of radiospectrograph

radiospectrometer
A radio telescope combined with a spectrometer

radiospectrometers
plural of radiospectrometer

radiosynthesizer
A device used in radiosynthesis

radiosynthesizers
plural of radiosynthesizer

radiotelemeter
A device used in radiotelemetry

radiotelemeters
plural of radiotelemeter

radiotelephone
A device that allows two-way communication by means of a radio.
Synonym of mobile phone

radiotelephoned
simple past and past participle of radiotelephone

radiotelephones
plural of radiotelephone

radiotelephoning
present participle and gerund of radiotelephone

radioteletype
A communication system consisting of teletypewriters linked by radio.

radioteletypes
plural of radioteletype

radioteletypewriter
A teletypewriter connected to a radio as part of a radioteletype system.

radioteletypewriters
plural of radioteletypewriter

radiotracker
A device that tracks wild animals fitted with radiocollars
Any of several devices that augment access to Internet radio sites

radiotrackers
plural of radiotracker

radiotransmitter
A radio transmitter

radiotransmitters
plural of radiotransmitter

radiowave
Alternative form of radio wave.

radiowaves
plural of radiowave

radiumizer
A device for treating water with radium, once believed to have health benefits.

radiumizers
plural of radiumizer

raffia
A fibrous material used for tying plants, originating from the leaves of raffia palm trees (genus Raphia).

raffias
plural of raffia

raftilose
A prebiotic fructooligosaccharide derived from inulin

ragbolt
An iron pin with barbed shank.

ragbond
heavyweight paper containing rag pulp, formerly used for government bonds

raiatwari
Alternative form of ryotwari.

rainbarrel
Alternative spelling of rain barrel.

rainbarrels
plural of rainbarrel

raincover
A piece of material used to protect an object from rainwater.

raincovers
plural of raincover

raiyatwari
Alternative form of ryotwari.

rakehoe
A tool, comprising a rake and form of hoe, used in the suppression of wildfires

rakehoes
plural of rakehoe

rambolt
A large nail or bolt fired or fixed into hard materials, such as steel and concrete, and used to hold or anchor them in place.

rambolts
plural of rambolt

ramdisk
Alternative spelling of RAM disk.

ramdisks
plural of ramdisk

ramelteon
A particular drug used to treat insomnia.

ramjet
A jet engine in which forward motion forces air into an inlet, compressing it (as opposed to having a pump type device compressing the air for combustion with fuel), and where combustion is subsonic.

ramjets
plural of ramjet

rammer
A device used to ram; a ramrod.
One who, or that, rams.

rammers
plural of rammer

ramset
A large nail or bolt fired or fixed into hard materials, such as steel and concrete, and used to hold or anchor them in place.

ramsets
plural of ramset

ranch
A large plot of land used for raising cattle, sheep or other livestock.
A small farm that cultivates vegetables or livestock, especially one in the Southwestern United States.
A house or property on a plot of ranch land.
Ranch dressing.

ranche
Obsolete spelling of ranch.

ranches
plural of ranch

ranchland
Land used for ranching, or raising livestock

ranchlands
plural of ranchland

rangehood
Alternative spelling of range hood.

rangehoods
plural of rangehood

rangekeeper
An early electromechanical computer used to direct gunfire.

rangekeepers
plural of rangekeeper

ranimustine
A particular drug used to treat cancer.

raquetball
Misspelling of racquetball.

rasteriser
Alternative spelling of rasterizer.

rasterisers
plural of rasteriser

rasterizer
A computer program that performs rasterization.

rasterizers
plural of rasterizer

rastra
Alternative form of arrastra.

rastras
plural of rastra

rastrum
A five-pointed writing implement used to draw parallel lines of a staff in sheet music.

rastrums
plural of rastrum

ratissage
A raid (especially violent) carried out by the police or military, originally and chiefly carried out by the French in Algeria. and, prior to that, by the Milice (Vichy Government counter-terror police) in 1943-44.
A monetary device whereby national reserves are temporarily given up to a central bank.

ratissages
plural of ratissage

rattrap
A device (trap) used to catch rats.
A dilapidated building, a place that is run down and unsanitary.
A difficult, entangling situation.
A type of bicycle pedal made of metal with no rubber.

rattraps
plural of rattrap

ravelin
An outwork. A fortification outside a castle used to split an attacking force; composed of two faces, forming a salient angle whose gorge resembles a half-moon

ravelins
plural of ravelin

rawinsonde
A radiosonde whose position is tracked as it ascends to give wind speed and direction information.

rawinsondes
plural of rawinsonde

rawranoke
Obsolete spelling of roanoke.

rayadillo
A blue-and-white striped cotton or flannel material used to make the military uniforms worn by Spanish colonial soldiers from the mid 19th century until the early 20th Century.

rayne
Obsolete form of rain.

rcd
Abbreviation of record.

rdf
radial distribution function

rdfs
plural of rdf

reactivator
One who, or that which, reactivates.
A device that removes hydrogen sulfide from a solution.

reactivators
plural of reactivator

realestate
Alternative form of real estate.

reamer
A tool for boring a hole wider.
A device for rendering citrus juice.
A tool used to scrape carbon deposit from the bowl of a pipe.
A Stone Age prehistoric lithic stone tool, used in archeology nomenclature.
One who reams.

reamered
simple past and past participle of reamer

reamering
present participle and gerund of reamer

reamers
plural of reamer

reans
plural of rean

reaphook
A sickle.

reaphooks
plural of reaphook

reatas
plural of reata

reb
Clipping of rebel: a Confederate, especially a Confederate soldier.

rebaler
A machine that rebales.

rebalers
plural of rebaler