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.
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Origin of nucleus
OTHER WORDS FROM nucleussub·nu·cle·us, noun, plural sub·nu·cle·i, sub·nu·cle·us·es.
Words nearby nucleus
British Dictionary definitions for subnucleus
noun plural -clei (-klɪˌaɪ) or -cleuses
- the central point of a starch granule
- a rare name for nucellus
Word Origin for nucleus
Medical definitions for subnucleus (1 of 2)
Medical definitions for subnucleus (2 of 2)
n. pl. nu•cle•us•es
Scientific definitions for subnucleus
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.
Cultural definitions for subnucleus (1 of 2)
plur. nuclei (nooh-klee-eye)
notes for nucleus
Cultural definitions for subnucleus (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.