protractor

English

A semicircular protractor.

A circular protractor.

Etymology

Etymology tree

Proto-Indo-European *per-der.?

Proto-Indo-European *per-der.?

Proto-Indo-European *pér

Proto-Indo-European *-o

Proto-Indo-European *pró

Proto-Indo-European *pro-

Proto-Italic *pro-

Latin prō-

Proto-Indo-European *dʰregʰ-der.?

Latin trahō

Latin prōtrahō

Latin prōtractusder.

English protract

Proto-Indo-European *-tōr

Proto-Italic *-tōr

Latin -tor

Latin -ātor

Old French -eorbor.

Middle English -our

▲

Latin -torlbor.

English -or

English protractor

From protract + -or.

Pronunciation

• IPA^(key): /pɹəˈtɹæktə(ɹ)/

  • Audio (Southern England):

    (file)

• Rhymes: -æktə(ɹ)

Noun

protractor (plural protractors)

1. One who, or that which, protracts, or causes protraction.
2. A circular or semicircular tool for drawing or measuring angles.

   plastic protractor

   measure with a protractor

   Use a protractor to measure the angle accurately.

   The student forgot to bring her protractor to geometry class.

3. (surgery) An instrument formerly used in extracting foreign or offensive matter from a wound.
4. (anatomy) A muscle that extends an organ or part; opposed to retractor.
5. An adjustable pattern used by tailors.

Synonyms

• (measuring tool): semicircle (for semicircular shape)

Hypernyms

• goniometer
• (UK) angle measurer

Translations

a circular or semicircular tool for measuring angles

• Albanian: këndmatës (sq) m
• Arabic: مِنْقَلَة f (minqala)
• Azerbaijani: bucaqölçən
• Breton: kornventer m
• Bulgarian: транспортир m (transportir)
• Catalan: transportador m, semicercle (ca)
• Chinese:

  Mandarin: 量角器 (zh) (liángjiǎoqì)

• Corsican: raportadore, rapurtadore
• Czech: úhloměr (cs) m
• Danish: vinkelmåler
• Dutch: gradenboog (nl)
• Esperanto: angulmezurilo
• Estonian: mall (et)
• Finnish: astelevy (fi)
• French: rapporteur (fr) m
• German: Winkelmesser (de) m, Winkelmaß n
• Greek: μοιρογνωμόνιο (el) n (moirognomónio), γωνιόμετρο (el) n (goniómetro)
• Gujarati: કોણમાપક n (koṇmāpak)
• Hebrew: מד־זווית
• Hungarian: szögmérő (hu)
• Icelandic: gráðubogi m, mælibogi m, hornmál n
• Ido: transportilo (io), angul-transportilo
• Indonesian: busur derajat
• Irish: uillinntomhais
• Italian: goniometro (it) m, protrattore m
• Japanese: 分度器 (ja) (ぶんどき, bundoki)
• Korean: 각도기(角度器) (ko) (gakdogi), 분도기(分度器) (ko) (bundogi) (North Korea)
• Kyrgyz: транспортир (ky) (transportir)
• Latvian: transportieris (lv) m
• Lithuanian: matlankis m
• Luxembourgish: Wénkelmiesser, Gradmiesser
• Macedonian: агломер m (aglomer)
• Malay: jangka sudut (ms), protraktor (ms)
• Manx: uillin-howsheyder m
• Māori: ine-koki
• Norwegian: vinkelmåler (no)
• Persian: نقاله (fa)
• Plautdietsch: Winkjelmäta m
• Polish: kątomierz (pl) m
• Portuguese: transferidor (pt) m
• Romanian: raportor (ro) n
• Russian: транспорти́р (ru) m (transportír), угломе́р (ru) m (uglomér)
• Scottish Gaelic: pròtractair m
• Serbo-Croatian:

  Cyrillic: угломер m

  Latin: uglomer m

• Slovak: uhlomer (sk) m
• Slovene: kotomer m
• Sorbian:

  Lower Sorbian: kutowe měritko n

  Upper Sorbian: kutoměr m

• Spanish: transportador (es) m
• Swahili: kipimapembe
• Swedish: gradskiva (sv)
• Tagalog: paniha, protraktor
• Tamil: கோணமானி (kōṇamāṉi)
• Telugu: కోణమానిని (kōṇamānini)
• Thai: โพรแทรกเตอร์, ครึ่งวงกลม (th) (krʉ̂ng-wong-glom)
• Turkish: açıölçer (tr), iletki (tr)
• Ukrainian: кутомір m (kutomir)
• Uzbek: transportir (uz)
• Vietnamese: thước đo góc (vi)
• Welsh: onglydd m

(anatomy) a muscle that extends an organ or part

• German: Streckmuskel (de) m