serum
the clear, pale-yellow liquid that separates from the clot in the coagulation of blood; blood serum.
any watery animal fluid.
the thin, clear part of the fluid of plants.
milk whey.
Origin of serum
1Other words from serum
- se·rum·al, adjective
Words Nearby serum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use serum in a sentence
In May, Moderna reported that serum from people given the half dose of the existing vaccine neutralized SARS-CoV-2 variants at levels similar to or higher than those against the non-variant strain.
Its intense hydrating benefits – and unique ability to hold many times its weight in water – make it a popular active ingredient in many hydrating serums and masks.
However, all the supersoldiers except for Isaiah eventually died from the serum.
All Your Falcon and the Winter Soldier Finale Questions, Answered | Eliana Dockterman | April 23, 2021 | TimeEnter “clean beauty”— images of effortlessly glowing people, makeup products that double as magical skin serums, and lists of supposedly ethical qualities ranging from cruelty-free to fragrance-free to formaldehyde-free.
Are ‘clean’ cosmetics better for us than other beauty products? | Sara Kiley Watson | March 17, 2021 | Popular-ScienceOur top-selling products are serums, toners, essences, which makes a lot of sense because people are in their homes and have more time to dedicate to their skincare routines.
Singapore-based Raena gets $9M Series A for its pivot to skincare and beauty-focused social commerce | Catherine Shu | February 26, 2021 | TechCrunch
If he contracts the disease, there will be no ‘secret serum’ waiting for him.
A Washington Post blog asks: “Why do two white Americans get the Ebola serum while hundreds of Africans die?”
Why the White Americans Got the ‘Secret’ Ebola Serum | Michael Daly | August 8, 2014 | THE DAILY BEASTThe New Republic demands: “Why did two U.S. missionaries get an Ebola serum while Africans are left to die?”
Why the White Americans Got the ‘Secret’ Ebola Serum | Michael Daly | August 8, 2014 | THE DAILY BEASTNever mind that there seem to have been no more than eight doses of the serum in existence.
Why the White Americans Got the ‘Secret’ Ebola Serum | Michael Daly | August 8, 2014 | THE DAILY BEASTThe serum failed to neutralize the virus in subsequent tests and seemed to offer little protection in animal experiments.
Infected Ebola Doctor Kent Brantly Is an Endangered Hero | Michael Daly | August 3, 2014 | THE DAILY BEASTIt is thinner than that of chronic bronchitis, and upon standing separates into three layers of pus, mucus, and frothy serum.
A Manual of Clinical Diagnosis | James Campbell ToddIt is especially useful with cultures upon serum media, but is applicable also to the sputum.
A Manual of Clinical Diagnosis | James Campbell ToddThe clear, straw-colored fluid which is left after separation of the coagulum is called blood-serum.
A Manual of Clinical Diagnosis | James Campbell ToddOne drop of the serum is then added to nine drops of normal salt solution, making a dilution of 1:10.
A Manual of Clinical Diagnosis | James Campbell ToddIn serum therapy antitoxins are artificially excited into being in the blood of beasts.
Essays In Pastoral Medicine | Austin Malley
British Dictionary definitions for serum
/ (ˈsɪərəm) /
See blood serum
antitoxin obtained from the blood serum of immunized animals
physiol zoology clear watery fluid, esp that exuded by serous membranes
a less common word for whey
Origin of serum
1Derived forms of serum
- serumal, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for serum
[ sîr′əm ]
Blood serum extracted from an animal that has immunity to a particular disease. The serum contains antibodies to one or more specific disease antigens, and when injected into humans or other animals, it can transfer immunity to those diseases.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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