Jump to: General, Art, Business, Computing, Medicine, Miscellaneous, Religion, Science, Slang, Sports, Tech, Phrases 

We found 9 dictionaries with English definitions that include the word atomic number 87: Click on the first link on a line below to go directly to a page where "atomic number 87" is defined. General (8 matching dictionaries) atomic number_87: Vocabulary.com [home, info] atomic number_87: Dictionary.com [home, info] Atomic number 87: Rhymezone [home, info] atomic number_87: Free Dictionary [home, info] atomic number_87: Mnemonic Dictionary [home, info] atomic number_87: WordNet 1.7 Vocabulary Helper [home, info] atomic number_87: LookWAYup Translating Dictionary/Thesaurus [home, info] atomic number_87: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) atomic number_87: Encyclopedia [home, info]

Quick definitions from WordNet (Atomic number 87) ▸ noun:  a radioactive element of the alkali-metal group discovered as a disintegration product of actinium