# Dictionary Definition

secant

### Noun

1 a straight line that intersects a curve at two
or more points

2 ratio of the hypotenuse to the adjacent side of
a right-angled triangle [syn: sec]

# User Contributed Dictionary

## English

### Noun

- A straight line that intersects a curve at two or more points.
- In a right triangle, the reciprocal of the cosine of an angle. Symbol: sec

#### Related terms

#### Translations

in trigonometry

# Extensive Definition

Secant is a term in mathematics. It comes from
the Latin secare (to cut). It can refer to:

- a secant line, in geometry
- the trigonometric function called secant
- the secant method, a root-finding algorithm in numerical analysis

secant in Danish: Sekant

secant in German: Sekante

secant in Basque: Sekante

secant in French: Sécante

secant in Italian: Secante

secant in Portuguese: Secante

secant in Serbian: Секанс

secant in Swedish: Sekant

# Synonyms, Antonyms and Related Words

air line, axis, beeline, chiasmal, chiasmic, chiastic, chord, crisscross, cross, crosscut, crossed, crossing, cut across, decussate, decussated, diagonal, diameter, direct line, directrix, edge, great-circle course, intersected, intersecting, normal, perpendicular, radius, radius vector, right
line, segment, shortcut, side, straight, straight course,
straight line, straight stretch, straightaway, streamline, tangent, transversal, vector