Either one of the two haploid gamete nuclei, just prior to their fusion in the fertilized egg.

Glossary of Biotechnology for Food and Agriculture . 2015.

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  • Nucleus Torn — band photo Background information Origin Switzerland Genres …   Wikipedia

  • pro|nu|cle|us — «proh NOO klee uhs, NYOO », noun, plural cle|i « klee y». Biology. the nucleus of a sperm or of an ovum, just before these unite in fertilization to form the nucleus (synkaryon) of the zygote. ╂[< New Latin pronucleus < Greek pró pro 2,… …   Useful english dictionary

  • pro|car|y|ot|ic — «proh KAR ee OT ihk», adjective. not having a visible nucleus or nuclei: »Procaryotic cells, which lack a nucleus and divide by simple fission, were a more primitive form of life than the eucaryotes and persist today in the bacteria and blue… …   Useful english dictionary

  • pro|ton-pro|ton chain — «PROH ton PROH ton», a nuclear reaction believed to be the source of energy of the sun and other hydrogen rich stars. It begins with the fusion of two protons to form a deuteron, the nucleus of a heavy hydrogen atom, which then changes in two… …   Useful english dictionary

  • pro|car|y|ote — «proh KAR ee oht», noun. a cell or organism without a visible nucleus or nuclei: »Procaryotes were found in the Beck Spring Dolomite in association with the primitive eucaryotes (Scientific American). Also, prokaryote. ╂[< pro 2 + Greek káryon …   Useful english dictionary

  • NUCLEUS — Scriptorierudito l. 2. Contra Iovinianum, memoratus, his verbis: Raro ieiunate, crebrius nubite. Nen enim potestis implere opera nuptiarum, nisi mulsum et carnes et Nucleum sumpseritis, viribus opus est ad libidinem: quid sibi velit, non satis se …   Hofmann J. Lexicon universale

  • pro|ti|um — «PROH tee uhm, shee », noun. the ordinary isotope of hydrogen, having a mass number of 1.0 Symbol: H1 (no period). ╂[< prot(on) + New Latin ium, a noun suffix meaning “element” (because the nucleus contains one proton only)] …   Useful english dictionary

  • pro|to|plast — «PROH tuh plast», noun. 1. the living unit of protoplasm within a plant cell, consisting of a nucleus, cytoplasm, and plasma membrane. 2. a) the first formed; the original. b) the hypothetical first man. ╂[< Middle French protoplaste, learned… …   Useful english dictionary

  • pro·ton — /ˈproʊˌtɑːn/ noun, pl tons [count] physics : a very small particle of matter that is part of the nucleus of an atom and that has a positive electrical charge …   Useful english dictionary

  • Arcuate nucleus — This article is about the hypothalamic structure. For the structure in the medulla oblongata, see Arcuate nucleus (medulla). Brain: Arcuate nucleus Arcuate nucleus is AR , at bottom center, in green. Latin nucleus arc …   Wikipedia

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