third

number

• constituting number three in a sequence; 3rd:the third century the third of October Edward the Third
• (a third/one third) each of three equal parts into which something is or may be divided:a third of a mile
• the third finisher or position in a race or competition:Hill finished third
• the third in a sequence of a vehicle’s gears:he took the corner in third
• Baseball third base.
• the third grade of a school.
• thirdly (used to introduce a third point or reason):second, they are lightly regulated; and third, they do business with nonresident clients
• Music an interval spanning three consecutive notes in a diatonic scale, e.g., C to E ( major third, equal to two tones) or A to C ( minor third, equal to a tone and a semitone).
• Music the note which is higher by a third than the tonic of a diatonic scale or root of a chord.
• British a place in the third-highest grade in an examination, especially that for a degree.