a soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘numéro atomique 79'.
Views expressed in the examples do not represent the opinion of Vocabulary.com or its editors.
Send us feedback
Word Family
2 million people are mastering new words.Master a word
Sign up now (it’s free!)
Whether you’re a teacher or a learner, Vocabulary.com can put you or your class on the path to systematic vocabulary improvement.