from the GNU version of the Collaborative International Dictionary of English
- A prefix which formerly properly indicated the second in a regular series of compound in the series, and not to its composition, but which is now generally employed in the same sense as bi- or di-, although little used.
from The Century Dictionary and Cyclopedia
- n. In chem., a prefix which denotes strictly the second term in an order or a series.
Sorry, no etymologies found.