The input to a pseudorandom number generator. Different seeds generate different pseudorandom sequences.
Source(s):
NIST SP 800-22 Rev. 1a

  A secret value that is used to initialize a process (e.g., a DRBG). Also see RBG seed.
Source(s):
NIST SP 800-57 Part 1 Rev. 5
NIST SP 800-57 Part 1 Rev. 4 [Superseded]

  Noun : A string of bits that is used as input to a DRBG mechanism. The seed will determine a portion of the internal state of the DRBG, and its entropy must be sufficient to support the security strength of the DRBG. Verb : To acquire bits with sufficient entropy for the desired security strength. These bits will be used as input to a DRBG mechanism to determine a portion of the initial internal state. Also see reseed.
Source(s):
NIST SP 800-90A Rev. 1

  A string of bits that is used to initialize a DRBG. Also called a Seed.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under RBG seed

  In XMSS, the public, random, unique identifier for the long-term key.
Source(s):
NIST SP 800-208 under SEED

  In LMS, a secret random value used for pseudorandom key generation.
Source(s):
NIST SP 800-208 under SEED

  An FFC domain parameter; an initialization value that is used during domain parameter generation that can also be used to provide assurance at a later time that the resulting domain parameters were generated using a canonical process.
Source(s):
NIST SP 800-56A Rev. 2 [Superseded] under SEED

  An optional ECC domain parameter; an initialization value that is used during domain parameter generation that can also be used to provide assurance at a later time that the resulting domain parameters were generated using a canonical process.
Source(s):
NIST SP 800-56A Rev. 2 [Superseded] under SEED

  A secret value that is used to initialize a process (e.g., a deterministic random bit generator). Also see RNG seed.
Source(s):
NIST SP 800-57 Part 1 Rev. 3 [Superseded]

  A string of bits that is used to initialize a DRBG. Also just called a Seed.
Source(s):
NIST SP 800-57 Part 1 Rev. 4 [Superseded] under RBG seed