# perpendicular

EN[ˌpɜː.pənˈdɪk.jə.lə(ɹ)] [pɝ.pɛnˈdɪk.ju.lɝ] [pɝ.pənˈdɪk.jə.lɝ]
WPerpendicular
• In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees). The property extends to other related geometric objects.
• A line is said to be perpendicular to another line if the two lines intersect at a right angle.
• Perpendicularity easily extends to segments and rays.
• A line is said to be perpendicular to a plane if it is perpendicular to every line in the plane that it intersects. Note that this definition depends on the definition of perpendicularity between lines.
EN Perpendicular

## Definition of perpendicular in English Dictionary

• NounPREper-
1. (geometry) A line or plane that is perpendicular to another.
1. A device such as a plumb line that is used in making or marking a perpendicular line.
1. (geometry) At or forming a right angle (to).
1. 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.
3. More Examples
1. Used in the Middle of Sentence
• The anteroposterior axis was perpendicular to the plane defined by the superoinferior axis and the transmalleolar axis.
• The anteroposterior axis was perpendicular to the plane defined by the superoinferior axis and the transcondylar axis.
• Muscle bundles run both parallel and perpendicular to the dermal surfaces of the fin (as seen in Fig 3 ), but only bundles running parallel to the dermal surface showed colabeling.
• Part-of-Speech Hierarchy
• Nouns
• Countable nouns