Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

sanidine

noun san·i·dine \ ˈsanəˌdēn , -də̇n \
See What's Trending Now See More Trending Words

Definition of sanidine

plural -s
: a variety of orthoclase in often transparent crystals in eruptive rock (as trachyte) that is thought to form at higher temperatures than adularia — called also glassy feldspar
—

sanidinic

adjective

There's more!

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

Origin and Etymology of sanidine

German sanidin, from Greek sanid-, sanis board + German -in -ine; from its tabular crystals

Seen and Heard

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

show hide

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

homogeneous

play

of the same or a similar kind or nature

Get Word of the Day daily email!

TRENDING NOW

  1. embolization 'the process by which a blood vessel or organ is obstructed by a material mass'

  2. oleaginous 'marked by an offensively ingratiating manner or quality'

  3. pansexual 'sexual desire or attraction...not limited to a particular gender identity or sexual orientation'

  4. symbiote 'an organism living in symbiosis'

  5. charlatan 'faker or fraud'

SEE ALL

Love words? Need even more definitions?

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

Words at Play

alt-5b0834b915e3f
'Judicial' v. 'Judicious': We'll Settle The Case

A judgment call

alt-5b06e60511014
'Deprived' vs. 'Depraved'

Nobody wants to be either.

alt-5b05d8545c817
'Folksonomy': Let’s Get Organized

Tag the way you want to tag.

image564383649
12 Words from All Over the Map

Some words say exactly where they're from

Ask the Editors

video-ghost-words
Ghost Word

The story of an imaginary word that managed to sneak past our editors and enter the dictionary.

image1760257654
2017 Word of the Year: Behind the Scenes

How we chose 'feminism'

video-literally
Literally

How to use a word that (literally) drives some people nuts.

video-his-or-her
Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

Word Games

spring-flowers
May 2018 Words of the Day Quiz

We’re already at the end of May?!

Take the quiz
image1676440788
Words Used by Nabokov Quiz

How familiar are you with Nabokov’s unfamiliar vocabulary?

Take the quiz
Spell It
Spell It

Can you spell these 10 commonly misspelled words?

Take the quiz
Word Winder's CrossWinder
Word Winder's CrossWinder

A game of winding words.

Play the game