WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / A / atomic number 40 atomic number 40 noun 16 letters Scrabble 20 WWF 26 Definitions noun a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon zirconiumzr Look “atomic number 40” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →