WordReference Random House Unabridged Dictionary of American English © 2026
Mi•cro•ci•on•a
(mī′krə sī′ə nə),USA pronunciation n.
- a genus of bright-red sponges of the Atlantic coasts of North America and Europe, used in experiments on the dissociation and reintegration of sponge cells.
- Greek mīkro- micro- + kíōn column + Neo-Latin -a -a2
- Neo-Latin