1. r

noun. (ˈɑːr) The length of a line segment between the center and circumference of a circle or sphere.
Synonyms
semidiameter diameter radius length radius of curvature diam
Antonyms
curve long short longness permanence
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2. R. J. Mitchell

noun. English aeronautical engineer (1895-1937).
Synonyms
Reginald Joseph Mitchell Mitchell

3. R. B. Cattell

noun. American psychologist (born in England) who developed a broad theory of human behavior based on multivariate research (1905-1998).
Synonyms
Ray Cattell Raymond B. Cattell Cattell Raymond Bernard Cattell

4. CD-R

noun. A compact disc on which you can write only once and thereafter is read-only memory.
Synonyms
compact disk CD compact disc compact disc write-once compact disc recordable CD-WO

5. R-2

noun. Street names for flunitrazepan.
Synonyms
circle roach rope Rohypnol rophy roofy Mexican valium flunitrazepan forget me drug
Antonyms
stay in place untie

6. R. Buckminster Fuller

noun. United States architect who invented the geodesic dome (1895-1983).
Synonyms
Fuller Richard Buckminster Fuller Buckminster Fuller

7. R

noun. The 18th letter of the Roman alphabet.
Synonyms
Roman alphabet alphabetic character letter letter of the alphabet r Latin alphabet
Antonyms
inconstancy unstable changeable unfaithful inconstant

8. R

noun. A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
Synonyms
roentgen radioactivity unit

9. r

noun. (ˈɑːr) The 18th letter of the Roman alphabet.
Synonyms
Roman alphabet R alphabetic character letter letter of the alphabet Latin alphabet
Antonyms
impermanence shortness

10. R

noun. (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole.
Synonyms
gas constant constant universal gas constant
Antonyms
variable discontinuous
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