Origin of nuclei
Definition for nuclei (2 of 2)
noun, plural nu·cle·i [noo-klee-ahy, nyoo-] /ˈnu kliˌaɪ, ˈnyu-/, nu·cle·us·es.
- the central, most prominent segment in a syllable, consisting of a vowel, diphthong, or vowellike consonant, as the a-sound in cat or the l-sound in bottled; peak.
- the most prominent syllable in an utterance or stress group; tonic syllable.
Origin of nucleus
Examples from the Web for nuclei
The nuclei at the base of these cylindrical cells are not all alike.The Origin of Vertebrates|Walter Holbrook Gaskell
The reason why the basal lamina is here small is because it contains the nuclei of no cranial nerves.
The nuclei of the columnar outer cells measure about 0.008 mm.The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
Some of my fellow-electrons acted as nuclei or foundations for the formation of the cloud particles.Autobiography of an Electron|Charles R. (Charles Robert) Gibson
In both cases the course of cleavage, and the resulting distribution of the nuclei in the yolk, was artificially modified.The Biological Problem of To-day|Oscar Hertwig
British Dictionary definitions for nuclei (1 of 2)
British Dictionary definitions for nuclei (2 of 2)
noun plural -clei (-klɪˌaɪ) or -cleuses
- the central point of a starch granule
- a rare name for nucellus
Word Origin for nucleus
Word Origin and History for nuclei
1704, "kernel of a nut," 1708, "head of a comet," from Latin nucleus "kernel," from nucula "little nut," diminutive of nux (genitive nucis) "nut," from PIE *kneu- "nut" (cf. Middle Irish cnu, Welsh cneuen, Middle Breton knoen "nut," Old Norse hnot, Old English hnutu "nut"). General sense of "central part or thing, about which others cluster" is from 1762. Use in reference to cells first recorded 1831. Modern atomic meaning is 1912, first by Ernest Rutherford, though theoretical use for "central point of an atom" is from 1844, in Faraday.
Medicine definitions for nuclei (1 of 2)
Medicine definitions for nuclei (2 of 2)
n. pl. nu•cle•us•es
Science definitions for nuclei
Plural nuclei (nōō′klē-ī′)
- The solid central part of a comet, typically several kilometers in diameter and composed of ice, frozen gases, and embedded chunks of rock and dust. It is the permanent part of a comet from which the coma and tail are generated as the comet approaches the Sun. See more at comet.
- See galactic nucleus.
Culture definitions for nuclei (1 of 2)
plur. nuclei (nooh-klee-eye)
Culture definitions for nuclei (2 of 2)
In biology, the central region of the cell, in which DNA is stored. The nucleus usually appears as a dark spot in the interior of the cell. Primitive cells (such as bacteria and blue-green algae) have no nuclei.