1

r

noun, often capitalized, often attributive \ ˈär \

Definition of r

plural r's or rs play \ˈärz\
1 a :the 18th letter of the English alphabet
b :a graphic representation of this letter
c :a speech counterpart of orthographic r
2 :a graphic device for reproducing the letter r
3 :one designated r especially as the 18th in order or class
4 :something shaped like the letter R

Examples of r in a Sentence

  1. There are two r's in “tomorrow.”

  2. “River” begins and ends with r.

First Known Use of r

before 12th century

Other Alphabet Terms


2

r

abbreviation

Definition of r

1 radius
2 rain
3 range
4 rare
5 real
6 recto
7 red
8 repeat
9 rerun
10 resistance
11 right
12 roentgen
13 rook
14 rough
15 run

1

R

abbreviation

Definition of R

1 rabbi
2 radial
3 radical used especially of a monovalent hydrocarbon radical
4 Rankine
5 Reaumur
6 recipe
7 registered trademark often enclosed in a circle
8 regular
9 Republican
10 river
11 R-value

2

R

certification mark

Definition of R

used to certify that a motion picture is of such a nature that admission is restricted to persons over a specified age (such as 17) unless accompanied by a parent or guardian — compare g, nc-17, pg, pg-13


R Defined for English Language Learners

r

noun

Definition of r for English Language Learners

  • : the 18th letter of the English alphabet


R Defined for Kids

r

noun, often capitalized \ ˈär \

Definition of r for Students

plural r's or rs \ˈärz\
:the 18th letter of the English alphabet

r.

abbreviation

Definition of r. for Students

right

R

abbreviation

Definition of R for Students

regular

R.

abbreviation

Definition of R. for Students

rabbi

Medical Dictionary

r

abbreviation

medical Definition of r

roentgen

R

abbreviation

medical Definition of R

1 Reaumur
2 rough used in bacteriology

R

symbol

medical Definition of R

chemical group and especially an organic chemical group
  • thiols have the general formula RSH

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pleasing or sweet sound

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