Browse Definitions :
Definition

surd

A surd is a number or quantity that cannot be expressed as the ratio of two integer s. The term also refers to a symbol ( ) that is sometimes used to indicate that the number or quantity that follows it is a root.

The surd symbol, all by itself, indicates the square root (1/2 power). If the surd has a number x written ahead of it and over the horizontal portion, then the symbol refers to the x th root (1/ x power) of that number. Therefore, for example:

indicates the cube root (1/3 power)

indicates the fourth root (1/4 power)

indicates the -7th root (-1/7 power)

indicates the n th root (1/ n power)

The extent of the quantity affected by the surd, and that follows it, is indicated by placing a horizontal line over that quantity. The most common example is the square root symbol .

Also see Mathematical Symbols .

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

  • data protection impact assessment (DPIA)

    A data protection impact assessment (DPIA) is a process designed to help organizations determine how data processing systems, ...

SearchSecurity

  • encryption

    Encryption is the method by which information is converted into secret code that hides the information's true meaning. The ...

  • cybersecurity

    Cybersecurity is the protection of internet-connected systems -- including hardware, software and data -- from cyberattacks.

  • computer worm

    A computer worm is a type of malicious software program whose primary function is to infect other computers while remaining ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

SearchStorage

Close