ribosome

[ rahy-buh-sohm ]
/ ˈraɪ bəˌsoʊm /

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 of ribosome

First recorded in 1955–60; ribo(se) + -some3

OTHER WORDS FROM ribosome

ri·bo·so·mal, adjective

British Dictionary definitions for ribosome

ribosome
/ (ˈraɪbəˌsəʊm) /

noun

any of numerous minute particles in the cytoplasm of cells, either free or attached to the endoplasmic reticulum, that contain RNA and protein and are the site of protein synthesis

Derived forms of ribosome

ribosomal, adjective

Word Origin for ribosome

C20: from ribo ( nucleic acid) + -some ³

Medical definitions for ribosome

ribosome
[ rībə-sōm′ ]

n.

A minute round cytoplasmic particle composed of RNA and protein that is the site of protein synthesis as directed by mRNA.

Other words from ribosome

ri′bo•somal (-sōməl) adj.

Scientific definitions for ribosome

ribosome
[ rībə-sōm′ ]

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.

Cultural definitions for ribosome

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.