noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   One who, or that which, protracts, or causes protraction.
2. 2
   drafting instrument used to draw or measure angles wordnet
3. 3
   A circular or semicircular tool for drawing or measuring angles.
4. 4
   An instrument formerly used in extracting foreign or offensive matter from a wound.
5. 5
   A muscle that extends an organ or part; opposed to retractor.

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6. 6
   An adjustable pattern used by tailors.

Synonyms

All synonyms

astrolabeazimuth circleazimuth compassbevelbevel protractorbevel square

Example

More examples

"Please bring a protractor to tomorrow's math class."

Etymology

From protract + -or.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.