# Straight line (disambiguation)

A **straight line** is:

- in math
- a fundamental object of geometry: an infinitely long straight line, see straight line
- the generalization of the concept of a straight line: the locally shortest connection between two points is called a geodesic
- an axiomatically required object in projective geometry

- in medieval law an inheritance to female family members, see straight line (inheritance)
- a punching technique in boxing, see cross (straight with the punching hand) and jab (straight with the leading hand)

**just** designated:

- Colloquially the present moment, see present
- in math
- an integer that is divisible by 2, see parity (math)
- a real function for which
*f*(-*x*) =*f*(*x*) for all*x*, see even and odd functions - the parity of a permutation, see sign (permutation)

**See also:**

**Wiktionary: Straight**- explanations of meanings, word origins, synonyms, translations

**Wiktionary: straight**- explanations of meanings, word origins, synonyms, translations