noun
-
Also called: quillai. a W South American rosaceous tree, Quillaja saponaria, with undivided evergreen leaves and small white flowers
-
Also called: quillai bark. the inner bark of this tree, formerly used as soap and as a source of saponin
-
any of several trees or shrubs that have a bark similar to this
Etymology
Origin of soapbark
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Osbourn had earlier teased out the many enzymatic steps involved in the soapbark tree's production of natural QS-21.
From Science Daily ● May 8, 2024
QS-21, a potent adjuvant, is sourced directly from the bark of the soapbark tree, raising concerns about the environmental sustainability of its supply.
From Science Daily ● Jan. 26, 2024
A valuable molecule sourced from the soapbark tree and used as a key ingredient in vaccines, has been replicated in an alternative plant host for the first time, opening unprecedented opportunities for the vaccine industry.
From Science Daily ● Jan. 26, 2024
The Novavax jab also includes a proprietary compound called Matrix-M, which was developed from the bark of Chilean soapbark trees and further stimulates the immune system.
From Scientific American ● Oct. 16, 2023
It has boasted about the potential of a secret proprietary ingredient, Matrix-M, an immune system booster derived from Chilean soapbark trees.
From Salon ● Jun. 12, 2022
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
