nu·​cle·​o·​syn·​the·​sis | \ ˌnü-klē-ō-ˈsin(t)-thə-səs How to pronounce nucleosynthesis (audio) , ˌnyü-\

Definition of nucleosynthesis

: the production of a chemical element from simpler nuclei (as of hydrogen) especially in a star

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Other Words from nucleosynthesis

nucleosynthetic \ ˌnü-​klē-​ō-​sin-​ˈthe-​tik How to pronounce nucleosynthetic (audio) , ˌnyü-​ \ adjective

Examples of nucleosynthesis in a Sentence

Recent Examples on the Web

Then came several minutes of nucleosynthesis, when these subatomic particles fused to form the nuclei of the first atoms — mostly hydrogen and helium. Dan Falk /, NBC News, "What is the Big Bang theory?," 9 June 2018 Beginning of the End In its younger days, Cassiopeia A began a process called nucleosynthesis, during which hydrogen and helium began fusing in its core to create heavier elements. National Geographic, "See How a Massive Supernova Released the Building Blocks of Life," 10 Jan. 2018 Astronomers believe neutrons released during the merger combine with surrounding atoms in a phenomenon known as r-process nucleosynthesis. Marina Koren, The Atlantic, "'A New Rosetta Stone for Astronomy'," 16 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nucleosynthesis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of nucleosynthesis

1957, in the meaning defined above

History and Etymology for nucleosynthesis

New Latin

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Time Traveler for nucleosynthesis

The first known use of nucleosynthesis was in 1957

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More from Merriam-Webster on nucleosynthesis Encyclopedia article about nucleosynthesis

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