English Reference

Word

third

US/ˈθɝd/

UK/θˈɜːd/

Definitions

01position in a sequence

A1 · Beginner

num. coming after the second person or thing.

num. the ordinal number matching the cardinal number three in a sequence.

“This is the third time I have asked you to clean your room.”

“The third candidate presented a significantly more robust strategy for market expansion than the previous two applicants.”

02a fraction

A2 · Elementary Countable noun Mathematics

n. one of three equal parts of something.

n. one of three equal parts into which a whole is or may be divided.

“He ate a third of the pizza and left the rest for his brother.”

“The survey indicates that nearly a third of the population remains undecided about the proposed constitutional changes.”

Synonyms

one-third

03vehicle gear

B1 · Intermediate Uncountable noun

n. the third gear in a car or bicycle.

n. the third gear in a transmission system, providing a balance of torque and speed.

“You should shift into third gear once you reach thirty miles per hour.”

“The driver struggled to engage third as the car laboured up the steep incline, eventually forcing a downshift back to second.”

04musical interval

B2 · Upper Intermediate Countable noun Music

n. the distance between the first and third notes in a scale.

n. an interval spanning three scale degrees, which determines the major or minor quality of a chord.

“The singer struggled to hit the major third in the opening chorus.”

“The composer utilised a series of parallel thirds to create a folk-like texture in the woodwind section.”

05university grade

C1 · Advanced Countable noun British English

n. the lowest passing grade for a university degree in the UK.

n. a third-class honours degree, representing the lowest level of passing honours in the British university system.

“He was disappointed to graduate with a third after three years of study.”

“While a third may limit immediate entry into prestigious graduate schemes, many professionals find that experience eventually outweighs their initial degree classification.”

06to support a motion

C2 · Proficiency Formal · Humorous

v. to be the third person to agree with a formal idea in a meeting.

v. to support a motion or proposal after it has already been moved and seconded.

“I'll third that suggestion; let's go get some lunch.”

“After the motion was seconded by the treasurer, the chairman asked if anyone wished to third the proposal before moving to a vote.”

Usage

Usually used in formal committee settings or as a lighthearted way to show strong agreement.

Synonyms

Etymology

PIE word *tréyes From Middle English thirde, thridde, from Old English þridda, from Proto-Germanic þridjô, from Pre-Germanic tretyós, a remodeling of Proto-Indo-European *tr̥tyós.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Related words

Idioms

Domain

Music

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A2 KeyIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.3.0–4.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 2.0–2.524–43TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.225–549
Frequency
Very common
Level
A2 · ElementaryOxford
Updated

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English Reference