sei
/seɪ/
sei noun: a sei whale.
Noun (1)
sei (plural seis)
- A sei whale.
- Seis also feed by engulfing small schooling fish.2005, Wayne Ledwell, Whales and Dolphins of Newfoundland and Labrador
Proper noun capitalized: SEI
SEI
- Initialism of Supporting Effective Instruction.
- “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...2017 May 23, Gregory Krieg and Will Mullery, “Trump’s budget by the numbers: What gets cut and why”, in CNN
Noun (2) capitalized: SEI
SEI (uncountable)
- Initialism of solid electrolyte interphase
Forms of sei
| plural | seis |
|---|
Origin of sei
From sei whale, from Norwegian seihval, seikval, from sei (“pollock”) + hval (“whale”). Doublet of saithe.
Phrases with sei
Words that rhyme with sei
Questions about sei
- What does sei mean?
- Sei means a sei whale.
- What part of speech is sei?
- Sei can be a noun or a proper noun.
- How do you pronounce sei?
- Sei is pronounced /seɪ/.
- What is the plural of sei?
- The plural of sei is seis.
Words near sei in the dictionary
Source and license
Adapted from Wiktionary: sei (page history and authors); SEI (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-sei.wav.
Cite this entry: “sei.” Word.ws, https://word.ws/sei. Based on Wiktionary, CC BY-SA 4.0.