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Se

1 American  
Symbol, Chemistry.
  1. selenium.


SE 2 American  
Or S.E.
se- 3 American  
  1. a prefix occurring in loanwords from Latin, where it meant “apart”.

    seduce; select.


Se 1 British  

symbol

  1. selenium

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

SE 2 British  

symbol

  1. southeast(ern)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

se 3 British  

abbreviation

  1. Sweden

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of se-

< Latin ( d ) (preposition), sē- (prefix) without, apart

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Building on this, the researchers explored whether adding NAC or Se to the diet could counteract those effects.

From Science Daily • Mar. 27, 2026

"The actuator is composed of a motor controller and reduction gears. It is very similar to an electric power steering system," says Se Uk Oh, vice president leading the robotics business division at Hyundai Mobis.

From BBC • Feb. 5, 2026

The executive director’s words echoed ones she’d written in the Pro Se newsletter when she warned of the staffing shortage: “These factors in my view are a recipe for increased tensions unprecedented since Attica.”

From Slate • Oct. 8, 2025

Cal State Channel Islands recently held its 2025 Sí Se Pudo Recognition Ceremony, an annual graduation celebration hosted on campus.

From Los Angeles Times • Jul. 8, 2025

I was an empty house with a sign in front, Se Vende, For Sale.

From "In the Time of the Butterflies" by Julia Alvarez