radiusra‧di‧us /ˈreɪdiəs/ ●○○ noun (plural radii /-diaɪ/) [countable] 
The shock of the explosion was felt over a radius of forty miles.within a 10-mile/200-metre etc radius There are more than a dozen golf courses within a 15-mile radius of St Andrews.3technical the outer bone of the lower part of your arm
WORD ORIGINradius
Origin:
1500-1600 Latin ‘ray, radius’EXAMPLES FROM OTHER DICTIONARIES
- The moon has a radius of approximately 1737 kilometers.
- All life, plant and animal, within a mile radius of Ground Zero simply vanished.
- The equatorial and polar radii have been measured by various means and correspond to some level above the cloud tops.
- The group also looked for John Deere equipment in a 20-mile radius.
- The ionic radius varies among the elements depending on atomic number and ionic charge of the ion.
- There is a single tendon insertion into the radius bone of the forearm.
- There were still a few funeral directors within a thirty-mile radius I had not, as yet, contacted.
- This is about a factor of 3 smaller than current best estimates of the neutron star radius.
WORD SETS
AB, nounabdomen, nounaccommodation, nounAchilles tendon, nounAdam's apple, nounadaptation, nounadenoids, nounadrenalin, nounairway, nounambidextrous, adjectiveanatomical, adjectiveankle, nounantibody, nounantigen, nounanus, nounanvil, nounaorta, nounappendix, nounarch, nounarmpit, nounarterial, adjectiveartery, nounatrium, nounbaby tooth, nounback, nounbackbone, nounbandy, adjectivebarrel-chested, adjectivebeat, verbbelly, nounbelly button, nounbicep, nounbig toe, nounbikini line, nounbile, nounbiological clock, nounbiorhythms, nounbiped, nounbladder, nounblind spot, nounblink, verbblink, nounblood count, nounblood group, nounblood pressure, nounbloodstream, nounblood type, nounblood vessel, nounBO, nounbody clock, nounbody odour, nounbone, nounbone marrow, nounbowel, nounbow legs, nounbrain, nounbrainwave, nounbreast, nounbreastbone, nounbristly, adjectivebronchial, adjectivebronchial tube, nounbrow, nounbuck teeth, nounbullnecked, adjectiveburp, verbbust, nounbuttock, nouncanine, nouncapillary, nouncardiac, adjectivecardio-, prefixcardiovascular, adjectivecarotid artery, nouncartilage, nouncentral nervous system, nouncerebellum, nouncerebral, adjectivecervical, adjectivecervix, nounchamber, nounchange of life, nouncheek, nouncheekbone, nounchest, nounchin, nouncirculation, nounclavicle, nouncleavage, nounclitoris, nounclose-set, adjectivecoccyx, nouncochlea, nouncock, nouncollarbone, nouncolon, nouncolour, nouncolour-blind, adjectiveconception, nouncone, nounconnective tissue, nouncoordination, nouncornea, nouncortex, nouncough, verbcough, nouncowlick, nouncranium, nouncrook, verbcrotch, nouncrow's feet, nouncrutch, nouncry, verbcuticle, noundandruff, noundeep-set, adjectivedefecate, verbdefence mechanism, noundental, adjectivedentine, nounderrière, noundiaphragm, noundigit, noundigital, adjectivedimple, noundisc, noundominant, adjectivedouble-jointed, adjectivedribble, verbdrool, verbduct, nounduodenum, nounear, nouneardrum, nounearhole, nounegg, nounejaculate, verbelbow, nounenamel, nounendocrine, adjectiveentrails, nounepidermis, nounepiglottis, nounerect, adjectiveerection, nounerogenous zone, nounexcrement, nounexcreta, nounexcrete, verbexcretion, nounexpectorate, verbextremity, nouneye, nouneyebrow, nouneyelash, nouneyelid, nouneyesight, nouneye tooth, nounface, nounfallopian tube, nounfart, verbfart, nounfemur, nounfibre, nounfibula, nounfigure, nounfingernail, nounfingertip, nounfist, nounfive o'clock shadow, nounflat-chested, adjectivefoetal position, nounfolic acid, nounfollicle, nounforearm, nounforefinger, nounforehead, nounforeskin, nounframe, nounfunny bone, noungall bladder, noungallstone, noungastric, adjectivegenital, adjectivegenitals, noungland, nounglottis, noungonad, noungrey matter, noungroin, nounG-spot, noungullet, noungum, nounhair, nounhairless, adjectivehairy, adjectivehammer, nounhamstring, nounhand, nounhand-eye co-ordination, nounhandlebar moustache, nounhead, nounheart, nounheel, nounhiccup, nounhiccup, verbhip, nounHomo sapiens, nounhumerus, nounhymen, nounimmune, adjectiveimmune system, nounimmunity, nouninbred, adjectiveincisor, nounindex finger, nouninherit, verbinstep, nounintestine, nounin vitro fertilization, nouniris, nounIVF, nounjaw, nounjawbone, nounjowl, nounkidney, nounknee, nounknee cap, nounknuckle, nounlap, nounlarge intestine, nounlarynx, nounlash, nounlaugh lines, nounlaughter lines, nounleft-handed, adjectivelefty, nounlens, nounlid, nounlifeblood, nounligament, nounlip, nounlittle finger, nounliver, nounlobe, nounlong-sighted, adjectivelumbar, adjectivelung, nounlymph, nounlymph node, nounmammary, adjectivemammary gland, nounmanual, adjectivemarrow, nounmasticate, verbmatrix, nounmelanin, nounmelatonin, nounmember, nounmenopause, nounmenses, nounmenstrual, adjectivemenstrual period, nounmenstruate, verbmiddle ear, nounmiddle finger, nounmidget, nounmidriff, nounmilk tooth, nounmind, nounmolar, nounmucous membrane, nounmuscle, nounnail, nounnape, nounnasal, adjectivenavel, nounnervous, adjectiveneurology, nounneuron, nounniacin, nounnipple, nounnode, nounnodule, nounnostril, nounocular, adjectiveoesophagus, nounoral, adjectiveovary, nounoverbite, nounoviduct, nounpalate, nounpalm, nounpalpitate, verbpalpitations, nounpancreas, nounpassage, nounpatella, nounpectorals, nounpelvic, adjectivepelvis, nounpenetrate, verbpepsin, nounperiod, nounperiod pain, nounperspiration, nounperspire, verbphallus, nounpharynx, nounphlegm, nounphysical, adjectivephysiognomy, nounphysiology, nounphysique, nounpigeon-toed, adjectivepit, nounpituitary, nounplacenta, nounplasma, nounplatelet, nounpore, nounpotbelly, nounpremenstrual, adjectiveprepubescent, adjectivepressure point, nounprimal, adjectiveprivate parts, nounprognathous, adjectiveprostate, nounpuberty, nounpubescent, adjectivepubic, adjectivepudendum, nounpulmonary, adjectivepulp, nounpulse, nounpupil, nounquad, nounquadruplet, nounquin, nounquintuplet, nounradius, nounreceptor, nounrecessive, adjectiverectal, adjectiverectum, nounred blood cell, nounREM sleep, nounrenal, adjectiveretina, nounRhesus factor, nounRH factor, nounrib, nounrib cage, nounright, adjectiveright-handed, adjectiveright-hander, nounrigor mortis, nounring finger, nounrod, nounRoman nose, nounround-shouldered, adjectiverun, verbsalivary gland, nounsallow, adjectivescalp, nounscaly, adjectivescapula, nounsciatic, adjectivescrotum, nounsemen, nounseminal, adjectivesense, nounsense organ, nounsensory, adjectivesextuplet, nounshank, nounshin, nounshinbone, nounshoulder, nounshoulder blade, nounside, nounsinew, nounsinus, nounskeletal, adjectiveskull, nounsleep, verbsleep, nounsmall intestine, nounsneeze, verbsneeze, nounsnub nose, nounsnub-nosed, adjectivesoft palate, nounsolar plexus, nounsole, nounsphincter, nounspinal, adjectivespinal column, nounspine, nounspit, verbspit, nounspittle, nounspleen, nounspotty, adjectivesputum, nounsternum, nounsteroid, nounstirrup, nounstomach, nounstool, nounstubble, nounsubcutaneous, adjectivesuck, verbsuckle, verbsuckling, nounsweat gland, nounsystem, nountailbone, nountan, verbtan, nountanned, adjectivetarsus, nountartar, nountaste bud, nountear, nounteardrop, nounteat, nountemple, nountendon, nountestes, nountesticle, nountestis, nountestosterone, nounthickset, adjectivethigh, nounthorax, nounthroat, nounthumb, nounthumbnail, nounthyroid, nountibia, nounticklish, adjectivetoe, nountoenail, nountongue, nountonsil, nountooth, nountorso, nountouch, nountrachea, nountriceps, nountrunk, nountympanum, nounulna, nounumbilical cord, nounurethra, nounuterus, nounuvula, nounvagina, nounvascular, adjectivevein, nounvenous, adjectiveventricle, nounvessel, nounvestibule, nounvital, adjectivevocal cords, nounvoice box, nounvulva, nounwaist, nounwall-eyed, adjectivewax, nounwhite, nounwhite blood cell, nounwindpipe, nounwisdom tooth, nounwomb, nounwrinkle, verbwrist, nounyawn, verbyawn, noun
COLLOCATIONS FROM THE ENTRY There are more than a dozen golf courses within a 15-mile radius of St Andrews.COLLOCATIONS FROM THE CORPUSNOUN
1the distance from the centre to the edge of a circle, or a line drawn from the centre to the edge2an area that covers a particular distance in all directions from a central point: There are more than a dozen golf courses within a 15-mile radius of St Andrews.· Those living outside a 50 mile radius £ 10 per year.· The volunteers may go with chaperones anywhere they want within a 25-mile radius of the center.· With over 34,000 hotel beds within a 30 mile radius of Birmingham, the city can accommodate even the largest international events.· All life, plant and animal, within a mile radius of Ground Zero simply vanished.· Most of the firms concerned are small and lie within a 10 mile radius of the University.· The group also looked for John Deere equipment in a 20-mile radius.· Within a five mile radius there are several pubs and restaurants.· It has 13 heavy metal and 12 chemical factories all lumped together within a several mile radius.
The shock of the explosion was felt over a radius of forty miles.within a 10-mile/200-metre etc radius There are more than a dozen golf courses within a 15-mile radius of St Andrews.3technical the outer bone of the lower part of your arm