sodium

noun so·di·um \ ˈsō-dē-əm \
|Updated on: 16 Jun 2018

Definition of sodium

: a silver-white soft waxy ductile element of the alkali metal group that occurs abundantly in nature in combined form and is very active chemically — see Chemical Elements Table

Recent Examples of sodium from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sodium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of sodium

New Latin, from English soda

Other Chemical Engineering Terms


SODIUM Defined for English Language Learners

sodium

Definition of sodium for English Language Learners

  • : a soft silver-white element that is found in salt, baking soda, and other compounds


SODIUM Defined for Kids

sodium

noun so·di·um \ ˈsō-dē-əm \

Definition of sodium for Students

: a soft waxy silver-white chemical element occurring in nature in combined form (as in salt)

Medical Dictionary

sodium

noun so·di·um \ ˈsōd-ē-əm \

medical Definition of sodium

: a silver white soft waxy ductile element of the alkali metal group that occurs abundantly in nature in combined form and is very active chemically symbol Na — see Chemical Elements Table


Seen and Heard

What made you want to look up sodium? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to emit the high shrill tone of bagpipes

Get Word of the Day daily email!

Test Your Vocabulary

Words for Summer: A Quiz

  • a-closeup-of-a-sunflower
  • Which of the following words means “of or relating to summer”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!