Dictionary
Thesaurus
Reference
Translate
Web
Nearby Entries
ribosome - 7 dictionary results

ri⋅bo⋅some

[rahy-buh-sohm]
–noun Cell Biology.
a tiny, somewhat mitten-shaped organelle occurring in great numbers in the cell cytoplasm either freely, in small clusters, or attached to the outer surfaces of endoplasmic reticula, and functioning as the site of protein manufacture.


Origin:
1955–60; ribo(se) + -some 3


ri⋅bo⋅so⋅mal, adjective
ri·bo·some   (rī'bə-sōm')   
n.  A minute round particle composed of RNA and protein that is found in the cytoplasm of living cells and serves as the site of assembly for polypeptides encoded by messenger RNA.

[ribo(nucleic acid) + -some3.]
ri'bo·so'mal (-sō'məl) adj.

ribosome [(reye-buh-sohm)]

A small, ball-like structure in the cell, made of proteins and RNA molecules, that serves as a platform on which the cell's proteins are made.


ribosome 
1958, coined by R.B. Roberts from ribo(nucleic acid) + -some "body."

Main Entry: ri·bo·some
Pronunciation: 'rI-b&-"sOm
Function: noun
: any of the RNA- and protein-rich cytoplasmic organelles that are sites ofprotein synthesis —ri·bo·som·al /"rI-b&-'sO-m&l/ adjective

ribosome ri·bo·some (rī'bə-sōm')
n.
A minute round cytoplasmic particle composed of RNA and protein that is the site of protein synthesis as directed by mRNA.


ri'bo·so'mal (-sō'məl) adj.

ribosome   (rī'bə-sōm')  Pronunciation Key 
A sphere-shaped structure within the cytoplasm of a cell that is composed of RNA and protein and is the site of protein synthesis. Ribosomes are free in the cytoplasm and often attached to the membrane of the endoplasmic reticulum. Ribosomes exist in both eukaryotic and prokaryotic cells. Plastids and mitochondria in eukaryotic cells have smaller ribosomes similar to those of prokaryotes. See more at cell.
Search another word or see ribosome on Thesaurus | Reference