sera definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
sera definition by American Heritage Dictionary
A plural of serum.
Variant of serum
noun pl. serums or sera
- a clear, watery animal fluid, as serous fluid
- the clear, yellowish fluid of the blood which separates from a blood clot after coagulation and shrinkagein full blood serum
- blood serum containing agents of immunity, taken from an animal made immune to a specific disease by inoculation: it is used as an antitoxin and for diagnosis
- the whey of milk
- the thin, watery part of a plant fluid
Origin: Classical Latin whey ; from Indo-European an unverified form serom, fluid ; from base an unverified form ser-, to flow from source Sanskrit sara-, fluid, Classical Greek hormē, an attack