Nouns

racon

noun

a device that, on receiving radar signals, transmits coded s...

radiancy

noun

the quality of being bright and sending out rays of light

radicchio

noun

prized variety of chicory having globose heads of red leaves

radicle

noun

(anatomy) a small structure resembling a rootlet (such as a...

radiculitis

noun

inflammation of the radicle of a nerve

radiobiology

noun

the branch of biology that studies the effects of radiation...

radiochemistry

noun

the chemistry of radioactive substances

radiograph

noun

a photographic image produced on a radiosensitive surface by...

radiolarian

noun

protozoa with amoeba-like bodies and radiating filamentous p...

radiolocation

noun

measuring instrument in which the echo of a pulse of microwa...

radiometer

noun

meter to detect and measure radiant energy (electromagnetic...

radiomicrometer

noun

radiometer that is extremely sensitive

radiopacity

noun

opacity to X-rays or other radiation

radiophone

noun

a telephone that communicates by radio waves rather than alo...

radiophotography

noun

transmission of photographs by radio waves

radioscopy

noun

(radiology) examination of the inner structure of opaque obj...

radiophotograph

noun

a photograph transmitted by radio waves

radiotelegraph

noun

the use of radio to send telegraphic messages (usually by Mo...

radiotelephone

noun

telephony that uses transmission by radio rather than by wir...

radiotelegraphy

noun

the use of radio to send telegraphic messages (usually by Mo...

radiotelephony

noun

telephony that uses transmission by radio rather than by wir...

radiothorium

noun

radioactive isotope of thorium with mass number 228

radix

noun

(numeration system) the positive integer that is equivalent...

radome

noun

a housing for a radar antenna; transparent to radio waves

raffinose

noun

a trisaccharide that occurs in sugar beets and cotton seeds...

raftsman

noun

someone who travels by raft

raggedness

noun

a texture of a surface or edge that is not smooth but is irr...

ragee

noun

East Indian cereal grass whose seed yield a somewhat bitter...

ragi

noun

East Indian cereal grass whose seed yield a somewhat bitter...

raglan

noun

a garment (coat or sweater) that has raglan sleeves

ragweed

noun

widespread European weed having yellow daisylike flowers; so...

ragwort

noun

American ragwort with yellow flowers

railhead

noun

a railroad depot in a theater of operations where military s...

raillery

noun

light teasing repartee

rajab

noun

the seventh month of the Islamic calendar

rakehell

noun

a dissolute man in fashionable society

rale

noun

a rapid series of short loud sounds (as might be heard with...

ramee

noun

tall perennial herb of tropical Asia with dark green leaves;...

rambutan

noun

pleasantly acid bright red oval Malayan fruit covered with s...

ramekin

noun

a small fireproof dish used for baking and serving individua...

ramification

noun

a part of a forked or branching shape

ramie

noun

tall perennial herb of tropical Asia with dark green leaves;...

ramjet

noun

a simple type of jet engine; must be launched at high speed

rampion

noun

bellflower of Europe and Asia and North Africa having bluish...

ramsons

noun

pungent Old World weedy plant

ranee

noun

(the feminine of raja) a Hindu princess or the wife of a raj...

rangefinder

noun

a measuring instrument (acoustic or optical or electronic) f...

rangpur

noun

hybrid between mandarin orange and lemon having very acid fr...

rankine

noun

a unit of temperature on the Rankine scale

ranunculus

noun

annual, biennial or perennial herbs: buttercup; crowfoot