nucleolus

[ noo-klee-uh-luhs, nyoo- ]

/ nuˈkli ə ləs, nyu- /

noun, plural nu·cle·o·li [noo-klee-uh-lahy, nyoo-]. /nuˈkli əˌlaɪ, nyu-/. Cell Biology.

a conspicuous, rounded body within the nucleus of a cell.

Origin of nucleolus

1835–45; <Late Latin: small kernel, equivalent to nucle(us) kernel (see nucleus) + -olus-ole¹

Words nearby nucleolus

nucleolate, nucleolated, nucleoliform, nucleoloid, nucleolonema, nucleolus, nucleon, nucleonics, nucleon number, nucleopetal, nucleophile

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for nucleolus

And within this nucleus is often to be seen another smaller body, frequently appearing as a mere dot, called the nucleolus.
An Elementary Text-book of the Microscope|John William Griffith
Possibly the nucleolus is the Supra- and Subconscious element.
Feminism and Sex-Extinction|Arabella Kenealy
The nucleolus is a minute solid spot in a nucleus, appearing to be more highly refractive.
Surgery, with Special Reference to Podiatry|Maximilian Stern
As yet the two natures and functions of the nucleus and nucleolus are by no means cleared up.
The Contemporary Review, Volume 36, October 1879|Various

Nucleolus: the small portion of matter in the nucleus most readily affected by staining fluids.
Explanation of Terms Used in Entomology|John. B. Smith

British Dictionary definitions for nucleolus

nucleolus

/ (ˌnjuːklɪˈəʊləs) /

noun plural -li (-laɪ)

a small rounded body within a resting nucleus that contains RNA and proteins and is involved in the production of ribosomesAlso called: nucleole

Derived forms of nucleolus

nucleolar, nucleolate or nucleolated, adjective

Word Origin for nucleolus

C19: from Latin, diminutive of nucleus

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for nucleolus

nucleolus

[ nōō-klē′ə-ləs ]

n. pl. nu•cle•o•li (-lī′)

A small, typically round granular body composed of protein and RNA in the nucleus of a cell, usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.

Other words from nucleolus

nu•cle′o•lar (-lər) adj.

Scientific definitions for nucleolus

nucleolus

[ nōō-klē′ə-ləs ]

Plural nucleoli (nōō-klē′ə-lī′)

A small, typically spherical granular body located in the nucleus of a eukaryotic cell, composed largely of protein and RNA. When the cell is not undergoing division, loops of DNA from one or more chromosomes extend into the nucleolus and direct the synthesis of ribosomal RNA and the formation of ribosomes. The ribosomes are eventually transferred out of the nucleus via pores in the nuclear envelope into the cytoplasm.

单词	nucleolus
释义	nucleolus [ noo-klee-uh-luhs, nyoo- ] / nuˈkli ə ləs, nyu- / noun, plural nu·cle·o·li [noo-klee-uh-lahy, nyoo-]. /nuˈkli əˌlaɪ, nyu-/. Cell Biology. a conspicuous, rounded body within the nucleus of a cell. Origin of nucleolus 1835–45; <Late Latin: small kernel, equivalent to nucle(us) kernel (see nucleus) + -olus-ole¹ Words nearby nucleolus nucleolate, nucleolated, nucleoliform, nucleoloid, nucleolonema, nucleolus, nucleon, nucleonics, nucleon number, nucleopetal, nucleophile Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for nucleolus And within this nucleus is often to be seen another smaller body, frequently appearing as a mere dot, called the nucleolus. An Elementary Text-book of the Microscope\|John William Griffith Possibly the nucleolus is the Supra- and Subconscious element. Feminism and Sex-Extinction\|Arabella Kenealy The nucleolus is a minute solid spot in a nucleus, appearing to be more highly refractive. Surgery, with Special Reference to Podiatry\|Maximilian Stern As yet the two natures and functions of the nucleus and nucleolus are by no means cleared up. The Contemporary Review, Volume 36, October 1879\|Various Nucleolus: the small portion of matter in the nucleus most readily affected by staining fluids. Explanation of Terms Used in Entomology\|John. B. Smith British Dictionary definitions for nucleolus nucleolus / (ˌnjuːklɪˈəʊləs) / noun plural -li (-laɪ) a small rounded body within a resting nucleus that contains RNA and proteins and is involved in the production of ribosomesAlso called: nucleole Derived forms of nucleolus nucleolar, nucleolate or nucleolated, adjective Word Origin for nucleolus C19: from Latin, diminutive of nucleus Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for nucleolus nucleolus [ nōō-klē′ə-ləs ] n. pl. nu•cle•o•li (-lī′) A small, typically round granular body composed of protein and RNA in the nucleus of a cell, usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes. Other words from nucleolus nu•cle′o•lar (-lər) adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for nucleolus nucleolus [ nōō-klē′ə-ləs ] Plural nucleoli (nōō-klē′ə-lī′) A small, typically spherical granular body located in the nucleus of a eukaryotic cell, composed largely of protein and RNA. When the cell is not undergoing division, loops of DNA from one or more chromosomes extend into the nucleolus and direct the synthesis of ribosomal RNA and the formation of ribosomes. The ribosomes are eventually transferred out of the nucleus via pores in the nuclear envelope into the cytoplasm. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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