sei

S1E1I1
/seɪ/

noun

A sei whale.

Less commonScrabble 3

Meanings

sei1

nounsei (plural seis)

plural seis

  1. A sei whale.

    Seis also feed by engulfing small schooling fish.

    2005, Wayne Ledwell, Whales and Dolphins of Newfoundland and Labrador

SEI2

proper noun
  1. USabbreviationinitialismInitialism of Supporting Effective Instruction.
    1 more example

    “The Budget proposes eliminating Supporting Effective Instruction (SEI) State Grants (Title II State grants), a program that provides formula funds to States to improve the quality and effectiveness of teachers, principals, and other schools leaders. SEI grants are poorly targeted and funds are spread too thinly to have a meaningful impact on student outcomes.

    2017 May 23, Gregory Krieg and Will Mullery, “Trump’s budget by the numbers: What gets cut and why”, in CNN
nounSEI (uncountable)
  1. abbreviationinitialismuncountableInitialism of solid electrolyte interphase

Origin

  1. Norwegianseihval, seikval
  2. Englishsei

From sei whale, from Norwegian seihval, seikval, from sei (“pollock”) + hval (“whale”). Doublet of saithe.

Full word history & related roots →

Rhymes & wordplay

Rhymes with sei

All rhymes →

Sounds the same

Anagrams

Cite this entry
APA

sei. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/sei

MLA

“sei.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sei. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “sei,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/sei.

Source: sei on Wiktionary, CC BY-SA 4.0.