Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
radio spectrum
radio star
radio telescope
radio wave
radioactive
radioactive dating
radioactive decay
radioactive series
radioactive tracer
radioactive waste
radioactivity
radiobiology
radiobroadcasting
radiocarbon
radiocarbon dating
radiochemistry
radioelement
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

radiolarian

ra·di·o·lar·i·an [ ràydee ō lérree ən ] (plural ra·di·o·lar·i·ans)


noun 
Definition:
 
microscopic ocean organism: a single-celled ocean organism with a round silica-containing shell that has the organs of movement radiating around it. Amoebas are radiolarians.

[Late 19th century. < modern Latin Radiolaria< radiolus "little staff, stick" < radius "staff, spoke, ray"]
Advertisement

© 2009 Microsoft