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  • Sn
    Sn
    tin.
  • SN
    SN
    abbreviation
    Secretary of the Navy.
  • sn
    sn
    abbreviation
    Senegal

Sn

1 American  
Symbol, Chemistry.
  1. tin.


SN 2 American  

abbreviation

  1. Secretary of the Navy.

  2. Also sn, s/n screen name.


SN 1 British  

abbreviation

  1. Senegal (international car registration)

"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

Sn 2 British  

symbol

  1. tin

"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

sn 3 British  

abbreviation

  1. Senegal

"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 Sn

From the Latin word stannum

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.

See Examples For:

One type, called Sn or "lid" waves, moves along the top of the mantle in a region known as the lid.

From Science Daily Feb. 20, 2026

Which of the following atoms would be expected to form negative ions in binary ionic compounds and which would be expected to form positive ions: Br, Ca, Na, N, F, Al, Sn, S, Cd?

From Textbooks Feb. 14, 2019

Compare Sn to π for n = 5, 10, 20 and discuss the number of correct decimal places.

From Textbooks Mar. 30, 2016

If S1 = 3, S = 9, and k = 1/2, numerically estimate the smallest value of n such that Sn ≥ 8.

From Textbooks Mar. 30, 2016

“Professor, I think — I know — that Sn — that someone’s going to try and steal the Stone. I’ve got to talk to Professor Dumbledore.”

From "Harry Potter and the Sorcerer's Stone" by J.K. Rowling

To investigate further, the team closely examined both the visible light and gamma-ray signals from SN 2017egm and compared the observations with different theoretical models.

From Science Daily May 27, 2026

SharkNinja’s SN -0.76%decrease; red down pointing triangle profit surged in the fourth quarter as sales across all four of the company’s product categories rose.

From The Wall Street Journal Feb. 11, 2026

Measurements show that this distant supernova closely matches the brightness and spectral features of SN 1998bw, a well known supernova linked to a gamma ray burst that exploded much closer to Earth.

From Science Daily Dec. 28, 2025

Thames Water said the temporary restriction would cover areas with postcodes beginning with OX, GL, SN, RG4, RG8 and RG9.

From BBC Jul. 14, 2025

I stare at a table of numbers whose columns are labeled DA DN SA SN, and have to flip back and scan for the explanation: Dissimilar Affirmative, Dissimilar Negative, Similar Affirmative, Similar Negative.

From "The Sense of Style" by Steven Pinker

A few moments ago, an injured Roger Federer’s completed sn absurd win from 7 match points down in the fourth set to beat Tennys Sandgren in 5 sets.

From The Guardian Jan. 28, 2020

This means that S is some linear function of s1, …, sn, but not a public linear function.

From Nature Sep. 12, 2017

But as sn oil producer, E.N.I, has been a bungling flop.

From Time Magazine Archive

"It's the sn ... the porcupine killers," said the solicitor general.

From Attention Saint Patrick by Leinster, Murray

The suffixes of all numbers and persons except the dual were in full use throughout, to Coptic; sn, however, giving way to a new suffix, -w, which developed first in the New Kingdom.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 1 "Edwardes" to "Ehrenbreitstein" by Various

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