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# Synonyms and Antonyms of r

### synonym (synonym of r)

• (noun.quantity)
a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air (noun.quantity)

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

• (noun.attribute)
the length of a line segment between the center and circumference of a circle or sphere (noun.attribute)

### hypernym (r IS A KIND OF .... relation)

• (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole (noun.quantity)
a number representing a quantity assumed to have a fixed value in a specified mathematical context (noun.quantity)

• a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air (noun.quantity)

• the 18th letter of the Roman alphabet (noun.communication)
the conventional characters of the alphabet used to represent speech (noun.communication)

• the length of a line segment between the center and circumference of a circle or sphere (noun.attribute)
the linear extent in space from one end to the other; the longest dimension of something that is fixed in place (noun.attribute)

### hyponym (.... IS A KIND OF r relation)

• (noun.attribute)
the apparent radius of a celestial body when viewed as a disc from the earth (noun.attribute)

• (noun.attribute)
the radius of the circle of curvature; the absolute value of the reciprocal of the curvature of a curve at a given point (noun.attribute)

### part meronym (HAS PART relation)

• (noun.attribute)
the length of a straight line passing through the center of a circle and connecting two points on the circumference (noun.attribute)

### member meronym (HAS MEMBER relation)

• the 18th letter of the Roman alphabet (noun.communication)
the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe (noun.communication)

### domain category (r is domain category of ....)

• (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole (noun.quantity)
the science of matter and energy and their interactions (noun.cognition)