Odd

Odd is an adjective denoting the quality of being unpaired, occasional, strange or unusual, or a person who is viewed as eccentric.

Odd may also refer to:

In mathematics, the term is used in several senses related to even:

• • even and odd numbers, an integer is odd if dividing by two does not yield an integer
  • even and odd functions, a function is odd if f(x) = –f(–x) for all x
  • even and odd permutations, a permutation of a finite set is odd if it is composed of an odd number of transpositions

In other contexts

• Odd (name), a male name common in Norway
• Odd, West Virginia, USA
• Odd Grenland, a Norwegian football team
• Odd Della Robbia, a character in Code Lyoko

ODD may refer to:

• Optical Disc Drive
• ODD (fanzine), a Hugo-nominated science fiction fanzine
• ODD (Text Encoding Initiative), "One Document Does it all", an abstracted literate-programming format for describing XML schemas
• ODD, a play by Hal Corley about a teenager with oppositional defiant disorder
• Operational Due Diligence
• Oppositional defiant disorder, a mental disorder characterized by defiant behavior