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 (no͞o′klē-ō-sĭn′thĭ-sĭs, nyo͞o′-)
The process by which heavier chemical elements are synthesized from lighter atomic nuclei in the interiors of stars, during supernova explosions, and in the early stages of the universe.

nu′cle·o·syn·thet′ic (-sĭn-thĕt′ĭk) adj.


(Astronomy) astronomy the formation of heavier elements from lighter elements by nuclear fusion in stars


(ˌnu kli oʊˈsɪn θə sɪs, ˌnyu-)

the formation of new atomic nuclei by nuclear reactions, as in stellar evolution.
nu`cle•o•syn•thet′ic (-ˈθɛt ɪk) adj.


The synthesis of heavier chemical elements from hydrogen nuclei in the interior of a star.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nucleosynthesis - (astronomy) the cosmic synthesis of atoms more complex than the hydrogen atom
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
synthesis - the process of producing a chemical compound (usually by the union of simpler chemical compounds)
References in periodicals archive ?
Objective: "NAUTILUS will investigate the nucleosynthesis of the chemical elements during the evolution of stars, which is the basis for understanding the chemical history of the Universe.
Neutron-capture nucleosynthesis can occur during the second giant phase of low-mass stars, near the core where the helium is partially converted to carbon.
The theory that describes this primordial element production, called Big Bang nucleosynthesis, successfully predicts the abundances of deuterium and helium that astronomers observe in ancient stars.
The CMBR was a prediction of the work of George Gamow, Ralph Alpher, Hans Bethe and Robert Herman on the Big Bang nucleosynthesis [11,12], and was discovered later in 1964 by Penzias and Wilson.
The article, "Chaos and turbulent nucleosynthesis prior to a supernova explosion" by David Arnett, Casey Meakin and Maxime Viallet appears in the journal AIP Advances on March 18, 2014 (DOI: 10.
Interaction of radiation and nuclear particles with other matter by absorption or reaction is covered, along with implications for detection and measurement, followed by stellar nucleosynthesis and occurrence of radioactive elements.
This process, the nuclear fusion of stellar nucleosynthesis, occurs when progressively heavier and heavier elements are fused from lighter ones within the hot core of a vibrant star.
One of the most important problems in physics and astronomy was the inconsistency between the lithium isotopes previously observed in the oldest stars in our galaxy, which suggested levels about two hundred times more Li-6 and about three to five time less Li-7 than Big Bang nucleosynthesis predicts.
It has a reasonably well understood origin, its own current operating principles, and the entities that comprise it (as in the heavier elements, precipitated through nucleosynthesis in stars) are entirely emergent.
Title: Evolution, Nucleosynthesis and Mass Loss in Low and Intermediate-Mass Stars
Heavy element transmutation was observed bull-dozed by the bow shock that matched stellar and supernova nucleosynthesis.
It also mapped out sites where all of the heavier elements in the periodic table are created, a process known as nucleosynthesis, which is detected by regions of strong radioactive emissions.