English nucleus definition
Borrowed from Latin nucleus (“kernel, core”), a diminutive of nux (“nut”). The earliest uses refer to the head of a comet and the kernel of a seed, both recorded in Lexicon Technicum in 1704. The sense in atomic physics was coined by English scientist Michael Faraday in 1844 in a theoretical meaning.
nucleus (plural nuclei or nucleuses)
- The core, central part of something, around which other elements are assembled.
- An initial part or version that will receive additions.
- This collection will form the nucleus of a new library.
- (chemistry, physics) The massive, positively charged central part of an atom, made up of protons and neutrons.
The branch of natural science
that deals with the composition and constitution of substances
and the changes that they undergo as a consequence of alterations in the constitution of their molecules
. (1 of 3 chemistry definitions
- (cytology) A large membrane-enclosed organelle found in eukaryotic cells which contains genetic material.
A specialized structure found inside cells
that carries out a specific life process (e.g. ribosomes
Having complex cells in which the genetic material is organized into membrane-bound nuclei
. (1 of 2 eukaryotic definitions
- (neuroanatomy) A ganglion, cluster of many neuronal bodies where synapsing occurs.
- (phonetics, phonology) The central part of a syllable, most commonly a vowel.
- Coordinate terms: onset, coda
The study of the physical sounds
of human speech
, concerned with the physical properties of speech sounds (phones), and the processes of their physiological production, auditory reception, and neurophysiological perception, and their representation by written symbols.
A unit of human speech that is interpreted by the listener as a single sound, although syllables usually consist of one or more vowel
sounds, either alone or combined with the sound of one or more consonants
; a word consists of one or more syllables. (1 of 3 syllable definitions
core, central part of something
initial part which will receive additions
physics: massive, positively charged core of an atom
cytology: large organelle found in cells
neuroanatomy: cluster of many neuronal bodies
linguistics: centre of a syllable
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Dictionary:Entry layout § Translations.
Translations to be checked
Dutch nucleus definition
Borrowed from Latin nūcleus (“kernel, core”), diminutive of nux (“nut”).
nucleus m (plural nucleussen or nuclei, diminutive nucleusje n)
- nucleus, core
Latin nucleus definition
A diminutive of nux (“nut”).
nū̆cleus m (genitive nū̆cleī); second declension
- (literally) (small) nut
- (figuratively) core
, central part of something, around which other elements are assembled. (1 of 6 nucleus definitions