{"query": "Plutonium (Pu) — element 94", "count": 12, "results": [{"id": "card_ref_el_094", "title": "Plutonium (Pu) — element 94", "shelf": "chemistry", "surface": "secular", "snippet": "Atomic number 94. Symbol Pu. Standard atomic weight 244.0. The plutonium atom carries 94 protons in its nucleus; its place in the periodic table is fixed by that count. Verified reference data.", "authority_tier": "reference", "source": "Verified reference — chemistry", "generated": false}, {"id": "card_src_word_weapons_plutonium", "title": "weapons plutonium", "shelf": "dictionary", "surface": "secular", "snippet": "weapons plutonium: (noun) plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits — syn: weapons-grade plutonium", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_weapons_grade_plutonium", "title": "weapons-grade plutonium", "shelf": "dictionary", "surface": "secular", "snippet": "weapons-grade plutonium: (noun) plutonium 239 that is recovered when nuclear weapons are disassembled; it is stored in plutonium pits — syn: weapons plutonium", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_plutonium", "title": "plutonium", "shelf": "dictionary", "surface": "secular", "snippet": "plutonium: (noun) a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in n", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_plutonium_pit", "title": "plutonium pit", "shelf": "dictionary", "surface": "secular", "snippet": "plutonium pit: (noun) a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives — syn: plutonium trigger", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_plutonium_trigger", "title": "plutonium trigger", "shelf": "dictionary", "surface": "secular", "snippet": "plutonium trigger: (noun) a steel or beryllium sphere containing plutonium 239 that triggers nuclear fission when compressed by explosives — syn: plutonium pit", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_pu", "title": "pu", "shelf": "dictionary", "surface": "secular", "snippet": "pu: (noun) a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear ", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_plutonium_bomb", "title": "plutonium bomb", "shelf": "dictionary", "surface": "secular", "snippet": "plutonium bomb: (noun) a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239) — syn: atom bomb, atomic bom", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_word_plutonium_239", "title": "plutonium 239", "shelf": "dictionary", "surface": "secular", "snippet": "plutonium 239: (noun) a highly fissionable isotope of plutonium that is used in atomic weapons and as a reactor fuel; produced by irradiating uranium 238 with slow electrons", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}, {"id": "card_src_pron_plutonium", "title": "plutonium", "shelf": "pronunciation", "surface": "secular", "snippet": "plutonium: pronounced (ARPABET) P L UW0 T OW1 N IY0 AH0 M. From the CMU Pronouncing Dictionary — the standard machine-readable pronunciations of North American English.", "authority_tier": "reference", "source": "CMU Pronouncing Dictionary (cmudict) — BSD-2-Clause, Carnegie Mellon", "generated": false}, {"id": "card_src_hist_q27089328", "title": "Plutonium Management and Disposition Agreement (2000)", "shelf": "history", "surface": "secular", "snippet": "Plutonium Management and Disposition Agreement — treaty. A treaty, 2000-09-01. Attestation: well attested (6 independent records). History passes the witness gate, not the seal — weigh the witnesses a", "authority_tier": "reference", "source": "Wikidata (CC0)", "generated": false}, {"id": "card_src_word_atomic_number_94", "title": "atomic number 94", "shelf": "dictionary", "surface": "secular", "snippet": "atomic number 94: (noun) a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesiz", "authority_tier": "reference", "source": "WordNet 3.0, Princeton University (WordNet License)", "generated": false}]}