filter paper
Americannoun
noun
Etymology
Origin of filter paper
First recorded in 1890–95
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.
They also collected urine samples on filter paper to measure estrogen and progesterone, allowing them to identify when ovulation occurred.
From Science Daily • Dec. 14, 2025
Blood obtained by pricking a baby’s heel was collected on filter paper and tested for phenylketonuria, a rare metabolic condition that, if untreated, causes intellectual disability.
From Scientific American • Nov. 13, 2023
This involves placing a piece of filter paper for 60 seconds between a dog’s lower eyelid and cornea.
From New York Times • Aug. 22, 2022
The scientists wiped the armpits of healthy people and dengue fever patients with an absorbent material, isolated the molecules that could become airborne, and dabbed them onto filter paper.
From Science Magazine • Jun. 30, 2022
A piece of filter paper soaked in a 5 p.c. solution of this salt is blue when dried, and turns pink in damp air.
From Rustic Sounds and Other Studies in Literature and Natural History by Darwin, Francis, Sir
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.
