What does orthogonally mean?
Orthogonally is an adverb meaning at right angles, or forming an exact 90-degree angle with another line, surface, plane, or direction. It is used especially in geometry, physics, engineering, architecture, computing, and image processing. For example, one might describe two beams as intersecting orthogonally or say that a camera is aligned orthogonally with a surface. The adverb is precise and technical, conveying an exact angular relationship rather than merely a generally perpendicular position. It can also describe mathematical or technical arrangements that are independent, mutually perpendicular, or arranged in orthogonal axes. Although the word is somewhat formal and uncommon in ordinary conversation, it is valuable when exactness matters. In general writing, the simpler phrase 'at right angles' often communicates the same idea more naturally.
adverbAt right angles to another line, plane, or direction; in an orthogonal manner.
- At right angles to another line, plane, or direction.
"The two beams intersect orthogonally at the center of the apparatus."
"The sensor is mounted orthogonally to the surface being scanned."
"The researchers used orthogonally polarized light to examine the crystal's structure."
Orthogonally means that two directions meet at exactly 90 degrees—the same neat right-angle relationship found in squares and rectangular grids.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does orthogonally come from?
Orthogonally is an adverb formed from the adjective orthogonal, which comes from New Latin orthogonalis. That form was borrowed from Greek orthogṓnios, from orthos, meaning straight or correct, and gōnia, meaning angle. The underlying idea is therefore literally 'having a straight or right-angled relationship,' and the word has long been associated with geometric descriptions of lines and axes.
Related word forms
How orthogonally is actually used
This is a formal or technical adverb, especially common in geometry, physics, engineering, computing, and descriptive writing. It is less common in everyday conversation, where 'at right angles' is usually clearer.