perpendicular
English edit
Etymology edit
From Middle French perpendiculaire, from Old French perpendiculer, from Latin perpendiculum (“plumb line”).
Pronunciation edit
- (UK) IPA(key): /ˌpɜː.pənˈdɪk.jə.lə(ɹ)/ enPR: pû"pəndĭ'kyələ(r),
- (US) IPA(key): /pɝ.pɛnˈdɪk.ju.lɚ/, /pɝ.pənˈdɪk.jə.lɚ/
Audio (US) (file) - Rhymes: -ɪkjʊlə(ɹ)
Adjective edit
perpendicular (comparative more perpendicular, superlative most perpendicular)
- (geometry) At or forming a right angle (to something).
- Synonyms: normal, orthogonal
- In most houses, the walls are perpendicular to the floor.
- 2012 March, Henry Petroski, “Opening Doors”, in American Scientist[1], volume 100, number 2, pages 112–3:
- A doorknob of whatever roundish shape is effectively a continuum of levers, with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place. Applying a force tangential to the knob is essentially equivalent to applying one perpendicular to a radial line defining the lever.
- Exactly upright; extending in a straight line toward the centre of the earth, etc.
- Independent of or irrelevant to each other; orthogonal.
- 2019 May 31, David M. Willis, “Wrangled”, in Dumbing of Age:
- Hey, I'm not unsabotaging anything! This is completely perpendicular sabotage!
Derived terms edit
Translations edit
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Noun edit
perpendicular (plural perpendiculars)
- (geometry) A line or plane that is perpendicular to another.
- A device such as a plumb line that is used in making or marking a perpendicular line.
- (obsolete, slang) A meal eaten at a tavern bar while standing up.
Translations edit
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See also edit
- ⟂ (This symbol can be pronounced “perp” when used as a subscript of a letter representing a vector.)
Catalan edit
Etymology edit
Borrowed from Late Latin perpendiculāris, from perpendiculum.
Pronunciation edit
- IPA(key): (Central) [pər.pən.di.kuˈlar]
- IPA(key): (Balearic) [pər.pən.di.kuˈla]
- IPA(key): (Valencian) [peɾ.pen.di.kuˈlaɾ]
Adjective edit
perpendicular m or f (masculine and feminine plural perpendiculars)
Derived terms edit
Noun edit
perpendicular f (plural perpendiculars)
Further reading edit
- “perpendicular” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
- “perpendicular”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2024
- “perpendicular” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
- “perpendicular” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.
Portuguese edit
Etymology edit
Borrowed from Late Latin perpendiculāris, from perpendiculum.
Pronunciation edit
- Hyphenation: per‧pen‧di‧cu‧lar
Adjective edit
perpendicular m or f (plural perpendiculares)
Noun edit
perpendicular f (plural perpendiculares)
Derived terms edit
Romanian edit
Etymology edit
Borrowed from French perpendiculaire.
Noun edit
perpendicular f (plural perpendiculare)
Declension edit
singular | plural | |||
---|---|---|---|---|
indefinite articulation | definite articulation | indefinite articulation | definite articulation | |
nominative/accusative | (o) perpendicular | perpendiculara | (niște) perpendiculare | perpendicularele |
genitive/dative | (unei) perpendiculare | perpendicularei | (unor) perpendiculare | perpendicularelor |
Spanish edit
Etymology edit
Borrowed from Late Latin perpendiculāris, from perpendiculum.
Pronunciation edit
Adjective edit
perpendicular m or f (masculine and feminine plural perpendiculares)
Derived terms edit
Further reading edit
- “perpendicular”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014