Word Study
r
WORDNET DICTIONARY
Noun r has 4 senses
- r(n = noun.quantity) roentgen - a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air; Array is a kind of radioactivity unit
- r(n = noun.quantity) gas constant, universal gas constant - (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole; Array is a kind of constant
- r(n = noun.communication) Array - the 18th letter of the Roman alphabet; Array is a member of latin alphabet, roman alphabet
- r(n = noun.attribute) radius - the length of a line segment between the center and circumference of a circle or sphere; Array is a part of diam, diameter
is a kind of alphabetic character, letter, letter of the alphabet
has particulars: semidiameter, radius of curvature
is a kind of length
CIDE DICTIONARY
r,
R, the eighteenth letter of the English alphabet, is a vocal consonant. It is sometimes called a semivowel, and a liquid. See Guide to Pronunciation, B. Jonson. [1913 Webster]
OXFORD DICTIONARY
r, n. (also r) (pl. Rs or R's) the eighteenth letter of the alphabet.
Idiom
the r months the months with r in their names (September to April) as the season for oysters.
r, abbr. (also R.)
1 Regina (Elizabeth R).
2 Rex.
3 River.
4 (also) registered as a trademark.
5 (in names of societies etc.) Royal.
6 Chess rook.
7 Railway.
8 rand.
9 Regiment.
10 R{eacute}aumur.
11 radius.
12 roentgen.
1 Regina (Elizabeth R).
2 Rex.
3 River.
4 (also) registered as a trademark.
5 (in names of societies etc.) Royal.
6 Chess rook.
7 Railway.
8 rand.
9 Regiment.
10 R{eacute}aumur.
11 radius.
12 roentgen.
ROGET THESAURUS
r
Time
N time, duration, period, term, stage, space, span, spell, season, the whole time, the whole period, space-time, course, snap, intermediate time, while, interim, interval, pendency, intervention, intermission, intermittence, interregnum, interlude, respite, era, epoch, time of life, age, year, date, decade, moment, glass of time, sands of time, march of time, Father Time, ravages of time, arrow of time, river of time, whirligig of time, noiseless foot of time, scythe, continuing, on foot, permanent, while, whilst, during, pending, during the time, during the interval, in the course of, at that point, at that point in time, for the time being, day by day, in the time of, when, meantime, meanwhile, in the meantime, in the interim, ad interim, pendente lite, de die in diem, from day to day, from hour to hour, hourly, always, for a time, for a season, till, until, up to, yet, as far as, by that time, so far, hereunto, heretofore, prior to this, up to this point, the whole time, all the time, all along, throughout, for good, hereupon, thereupon, whereupon, then, anno Domini, A, D, ante Christum, A, C, before Christ, B, C, anno urbis conditae, A, U, C, anno regni, A, R, once upon a time, one fine morning, one fine day, one day, once, time flies, tempus fugit, time runs out, time runs against, race against time, racing the clock, time marches on, time is of the essence, time and tide wait for no man, ad calendas Groecas, panting Time toileth after him in vain, 'gainst the tooth of time and razure of oblivion, rich with the spoils of time, tempus edax rerum, the long hours come and go, the time is out of joint, Time rolls his ceaseless course, Time the foe of man's dominion, time wasted is existence, used is life, truditur dies die, volat hora per orbem, carpe diem.
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